Home / 23,138.45-31,931.02-12,528.08

Finding the Fourth Proportional to 23,138.45, 31,931.02 and 12,528.08

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Solution

The fourth proportional to 23,138.45, 31,931.02 and 12,528.08 is: 17,288.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,138.45 : 31,931.02 = 12,528.08 : x
  2. Step 2: Convert to fraction form
    23,138.45/31,931.02 = 12,528.08/x
  3. Step 3: Cross multiply
    23,138.45x = 31,931.02 × 12,528.08
  4. Step 4: Simplify right side
    23,138.45x = 400,034,373.04
  5. Step 5: Solve for x
    x = 400,034,373.04/23,138.45
  6. Step 6: Final answer
    x = 17,288.73

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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.