Home / 23,140.86-31,934.24-12,530.40

Finding the Fourth Proportional to 23,140.86, 31,934.24 and 12,530.40

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Solution

The fourth proportional to 23,140.86, 31,934.24 and 12,530.40 is: 17,291.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,140.86 : 31,934.24 = 12,530.40 : x
  2. Step 2: Convert to fraction form
    23,140.86/31,934.24 = 12,530.40/x
  3. Step 3: Cross multiply
    23,140.86x = 31,934.24 × 12,530.40
  4. Step 4: Simplify right side
    23,140.86x = 400,148,800.90
  5. Step 5: Solve for x
    x = 400,148,800.90/23,140.86
  6. Step 6: Final answer
    x = 17,291.87

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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.