Home / 28,445,497.60-42,668,246.40-20,887,225.60

Finding the Fourth Proportional to 28,445,497.60, 42,668,246.40 and 20,887,225.60

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Solution

The fourth proportional to 28,445,497.60, 42,668,246.40 and 20,887,225.60 is: 31,330,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445,497.60 : 42,668,246.40 = 20,887,225.60 : x
  2. Step 2: Convert to fraction form
    28,445,497.60/42,668,246.40 = 20,887,225.60/x
  3. Step 3: Cross multiply
    28,445,497.60x = 42,668,246.40 × 20,887,225.60
  4. Step 4: Simplify right side
    28,445,497.60x = 891,221,288,513,187.88
  5. Step 5: Solve for x
    x = 891,221,288,513,187.88/28,445,497.60
  6. Step 6: Final answer
    x = 31,330,838.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.