Home / 28,543,632.50-39,390,233.10-15,490,888.32

Finding the Fourth Proportional to 28,543,632.50, 39,390,233.10 and 15,490,888.32

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Solution

The fourth proportional to 28,543,632.50, 39,390,233.10 and 15,490,888.32 is: 21,377,436.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543,632.50 : 39,390,233.10 = 15,490,888.32 : x
  2. Step 2: Convert to fraction form
    28,543,632.50/39,390,233.10 = 15,490,888.32/x
  3. Step 3: Cross multiply
    28,543,632.50x = 39,390,233.10 × 15,490,888.32
  4. Step 4: Simplify right side
    28,543,632.50x = 610,189,701,850,867.38
  5. Step 5: Solve for x
    x = 610,189,701,850,867.38/28,543,632.50
  6. Step 6: Final answer
    x = 21,377,436.87

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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.