Home / 28,607,631.27-39,478,231.65-21,298,152.39

Finding the Fourth Proportional to 28,607,631.27, 39,478,231.65 and 21,298,152.39

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Solution

The fourth proportional to 28,607,631.27, 39,478,231.65 and 21,298,152.39 is: 29,391,227.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,607,631.27 : 39,478,231.65 = 21,298,152.39 : x
  2. Step 2: Convert to fraction form
    28,607,631.27/39,478,231.65 = 21,298,152.39/x
  3. Step 3: Cross multiply
    28,607,631.27x = 39,478,231.65 × 21,298,152.39
  4. Step 4: Simplify right side
    28,607,631.27x = 840,813,393,769,421.12
  5. Step 5: Solve for x
    x = 840,813,393,769,421.12/28,607,631.27
  6. Step 6: Final answer
    x = 29,391,227.32

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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.