Home / 28,018,612.12-38,667,417.50-15,459,605.39

Finding the Fourth Proportional to 28,018,612.12, 38,667,417.50 and 15,459,605.39

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Solution

The fourth proportional to 28,018,612.12, 38,667,417.50 and 15,459,605.39 is: 21,335,211.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018,612.12 : 38,667,417.50 = 15,459,605.39 : x
  2. Step 2: Convert to fraction form
    28,018,612.12/38,667,417.50 = 15,459,605.39/x
  3. Step 3: Cross multiply
    28,018,612.12x = 38,667,417.50 × 15,459,605.39
  4. Step 4: Simplify right side
    28,018,612.12x = 597,783,016,000,380.38
  5. Step 5: Solve for x
    x = 597,783,016,000,380.38/28,018,612.12
  6. Step 6: Final answer
    x = 21,335,211.52

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Double scale
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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.