Home / 15,490.11-21,355.76-12,314.10

Finding the Fourth Proportional to 15,490.11, 21,355.76 and 12,314.10

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Solution

The fourth proportional to 15,490.11, 21,355.76 and 12,314.10 is: 16,977.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.11 : 21,355.76 = 12,314.10 : x
  2. Step 2: Convert to fraction form
    15,490.11/21,355.76 = 12,314.10/x
  3. Step 3: Cross multiply
    15,490.11x = 21,355.76 × 12,314.10
  4. Step 4: Simplify right side
    15,490.11x = 262,976,902.65
  5. Step 5: Solve for x
    x = 262,976,902.65/15,490.11
  6. Step 6: Final answer
    x = 16,977.08

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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.