Home / 22,389.91-30,898.07-12,318.13

Finding the Fourth Proportional to 22,389.91, 30,898.07 and 12,318.13

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Solution

The fourth proportional to 22,389.91, 30,898.07 and 12,318.13 is: 16,999.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,389.91 : 30,898.07 = 12,318.13 : x
  2. Step 2: Convert to fraction form
    22,389.91/30,898.07 = 12,318.13/x
  3. Step 3: Cross multiply
    22,389.91x = 30,898.07 × 12,318.13
  4. Step 4: Simplify right side
    22,389.91x = 380,606,443.01
  5. Step 5: Solve for x
    x = 380,606,443.01/22,389.91
  6. Step 6: Final answer
    x = 16,999.02

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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.