Home / 28,730,766.20-39,649,298.64-15,678,866.12

Finding the Fourth Proportional to 28,730,766.20, 39,649,298.64 and 15,678,866.12

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Solution

The fourth proportional to 28,730,766.20, 39,649,298.64 and 15,678,866.12 is: 21,637,294.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730,766.20 : 39,649,298.64 = 15,678,866.12 : x
  2. Step 2: Convert to fraction form
    28,730,766.20/39,649,298.64 = 15,678,866.12/x
  3. Step 3: Cross multiply
    28,730,766.20x = 39,649,298.64 × 15,678,866.12
  4. Step 4: Simplify right side
    28,730,766.20x = 621,656,045,128,458
  5. Step 5: Solve for x
    x = 621,656,045,128,458/28,730,766.20
  6. Step 6: Final answer
    x = 21,637,294.35

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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.