Home / 22,760.52-31,409.08-12,688.64

Finding the Fourth Proportional to 22,760.52, 31,409.08 and 12,688.64

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Solution

The fourth proportional to 22,760.52, 31,409.08 and 12,688.64 is: 17,510.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,760.52 : 31,409.08 = 12,688.64 : x
  2. Step 2: Convert to fraction form
    22,760.52/31,409.08 = 12,688.64/x
  3. Step 3: Cross multiply
    22,760.52x = 31,409.08 × 12,688.64
  4. Step 4: Simplify right side
    22,760.52x = 398,538,508.85
  5. Step 5: Solve for x
    x = 398,538,508.85/22,760.52
  6. Step 6: Final answer
    x = 17,510.08

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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.