Home / 28,721,646.60-43,103,465.10-20,218,590.60

Finding the Fourth Proportional to 28,721,646.60, 43,103,465.10 and 20,218,590.60

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Solution

The fourth proportional to 28,721,646.60, 43,103,465.10 and 20,218,590.60 is: 30,342,665.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721,646.60 : 43,103,465.10 = 20,218,590.60 : x
  2. Step 2: Convert to fraction form
    28,721,646.60/43,103,465.10 = 20,218,590.60/x
  3. Step 3: Cross multiply
    28,721,646.60x = 43,103,465.10 × 20,218,590.60
  4. Step 4: Simplify right side
    28,721,646.60x = 871,491,314,298,288.12
  5. Step 5: Solve for x
    x = 871,491,314,298,288.12/28,721,646.60
  6. Step 6: Final answer
    x = 30,342,665.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.