Home / 15,314,613.76-21,134,308.71-8,439,341.86

Finding the Fourth Proportional to 15,314,613.76, 21,134,308.71 and 8,439,341.86

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Solution

The fourth proportional to 15,314,613.76, 21,134,308.71 and 8,439,341.86 is: 11,646,369.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314,613.76 : 21,134,308.71 = 8,439,341.86 : x
  2. Step 2: Convert to fraction form
    15,314,613.76/21,134,308.71 = 8,439,341.86/x
  3. Step 3: Cross multiply
    15,314,613.76x = 21,134,308.71 × 8,439,341.86
  4. Step 4: Simplify right side
    15,314,613.76x = 178,359,656,178,465.59
  5. Step 5: Solve for x
    x = 178,359,656,178,465.59/15,314,613.76
  6. Step 6: Final answer
    x = 11,646,369.86

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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.