Home / 20,828,335,008.05-28,742,613,447.33-12,255,316,920.70

Finding the Fourth Proportional to 20,828,335,008.05, 28,742,613,447.33 and 12,255,316,920.70

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Solution

The fourth proportional to 20,828,335,008.05, 28,742,613,447.33 and 12,255,316,920.70 is: 16,912,049,704.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828,335,008.05 : 28,742,613,447.33 = 12,255,316,920.70 : x
  2. Step 2: Convert to fraction form
    20,828,335,008.05/28,742,613,447.33 = 12,255,316,920.70/x
  3. Step 3: Cross multiply
    20,828,335,008.05x = 28,742,613,447.33 × 12,255,316,920.70
  4. Step 4: Simplify right side
    20,828,335,008.05x = 352,249,836,926,280,925,184
  5. Step 5: Solve for x
    x = 352,249,836,926,280,925,184/20,828,335,008.05
  6. Step 6: Final answer
    x = 16,912,049,704.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.