Home / 22,785.62-31,440.37-15,219.81

Finding the Fourth Proportional to 22,785.62, 31,440.37 and 15,219.81

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Solution

The fourth proportional to 22,785.62, 31,440.37 and 15,219.81 is: 21,000.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,785.62 : 31,440.37 = 15,219.81 : x
  2. Step 2: Convert to fraction form
    22,785.62/31,440.37 = 15,219.81/x
  3. Step 3: Cross multiply
    22,785.62x = 31,440.37 × 15,219.81
  4. Step 4: Simplify right side
    22,785.62x = 478,516,381.63
  5. Step 5: Solve for x
    x = 478,516,381.63/22,785.62
  6. Step 6: Final answer
    x = 21,000.81

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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.