Home / 15,220,411.30-21,005,025.74-9,029,123.65

Finding the Fourth Proportional to 15,220,411.30, 21,005,025.74 and 9,029,123.65

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Solution

The fourth proportional to 15,220,411.30, 21,005,025.74 and 9,029,123.65 is: 12,460,699.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220,411.30 : 21,005,025.74 = 9,029,123.65 : x
  2. Step 2: Convert to fraction form
    15,220,411.30/21,005,025.74 = 9,029,123.65/x
  3. Step 3: Cross multiply
    15,220,411.30x = 21,005,025.74 × 9,029,123.65
  4. Step 4: Simplify right side
    15,220,411.30x = 189,656,974,677,892.75
  5. Step 5: Solve for x
    x = 189,656,974,677,892.75/15,220,411.30
  6. Step 6: Final answer
    x = 12,460,699.71

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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.