Home / 28,381,690.40-42,572,535.60-12,456,442.40

Finding the Fourth Proportional to 28,381,690.40, 42,572,535.60 and 12,456,442.40

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Solution

The fourth proportional to 28,381,690.40, 42,572,535.60 and 12,456,442.40 is: 18,684,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,381,690.40 : 42,572,535.60 = 12,456,442.40 : x
  2. Step 2: Convert to fraction form
    28,381,690.40/42,572,535.60 = 12,456,442.40/x
  3. Step 3: Cross multiply
    28,381,690.40x = 42,572,535.60 × 12,456,442.40
  4. Step 4: Simplify right side
    28,381,690.40x = 530,302,337,523,349.50
  5. Step 5: Solve for x
    x = 530,302,337,523,349.50/28,381,690.40
  6. Step 6: Final answer
    x = 18,684,663.60

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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.