Home / 23,011.80-31,753.98-12,938.64

Finding the Fourth Proportional to 23,011.80, 31,753.98 and 12,938.64

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Solution

The fourth proportional to 23,011.80, 31,753.98 and 12,938.64 is: 17,854.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,011.80 : 31,753.98 = 12,938.64 : x
  2. Step 2: Convert to fraction form
    23,011.80/31,753.98 = 12,938.64/x
  3. Step 3: Cross multiply
    23,011.80x = 31,753.98 × 12,938.64
  4. Step 4: Simplify right side
    23,011.80x = 410,853,315.79
  5. Step 5: Solve for x
    x = 410,853,315.79/23,011.80
  6. Step 6: Final answer
    x = 17,854.03

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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.