Home / 28,459,019.52-39,273,438.48-15,406,268.72

Finding the Fourth Proportional to 28,459,019.52, 39,273,438.48 and 15,406,268.72

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Solution

The fourth proportional to 28,459,019.52, 39,273,438.48 and 15,406,268.72 is: 21,260,646.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459,019.52 : 39,273,438.48 = 15,406,268.72 : x
  2. Step 2: Convert to fraction form
    28,459,019.52/39,273,438.48 = 15,406,268.72/x
  3. Step 3: Cross multiply
    28,459,019.52x = 39,273,438.48 × 15,406,268.72
  4. Step 4: Simplify right side
    28,459,019.52x = 605,057,146,781,268.38
  5. Step 5: Solve for x
    x = 605,057,146,781,268.38/28,459,019.52
  6. Step 6: Final answer
    x = 21,260,646.26

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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.