Home / 28,890,677.78-39,871,657.62-15,840,458.96

Finding the Fourth Proportional to 28,890,677.78, 39,871,657.62 and 15,840,458.96

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Solution

The fourth proportional to 28,890,677.78, 39,871,657.62 and 15,840,458.96 is: 21,861,216.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890,677.78 : 39,871,657.62 = 15,840,458.96 : x
  2. Step 2: Convert to fraction form
    28,890,677.78/39,871,657.62 = 15,840,458.96/x
  3. Step 3: Cross multiply
    28,890,677.78x = 39,871,657.62 × 15,840,458.96
  4. Step 4: Simplify right side
    28,890,677.78x = 631,585,356,196,781.25
  5. Step 5: Solve for x
    x = 631,585,356,196,781.25/28,890,677.78
  6. Step 6: Final answer
    x = 21,861,216.31

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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.