Home / 23,138.46-31,931.10-12,528.12

Finding the Fourth Proportional to 23,138.46, 31,931.10 and 12,528.12

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Solution

The fourth proportional to 23,138.46, 31,931.10 and 12,528.12 is: 17,288.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,138.46 : 31,931.10 = 12,528.12 : x
  2. Step 2: Convert to fraction form
    23,138.46/31,931.10 = 12,528.12/x
  3. Step 3: Cross multiply
    23,138.46x = 31,931.10 × 12,528.12
  4. Step 4: Simplify right side
    23,138.46x = 400,036,652.53
  5. Step 5: Solve for x
    x = 400,036,652.53/23,138.46
  6. Step 6: Final answer
    x = 17,288.82

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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.