Home / 23,128.29-34,660.28-12,987.70

Finding the Fourth Proportional to 23,128.29, 34,660.28 and 12,987.70

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Solution

The fourth proportional to 23,128.29, 34,660.28 and 12,987.70 is: 19,463.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,128.29 : 34,660.28 = 12,987.70 : x
  2. Step 2: Convert to fraction form
    23,128.29/34,660.28 = 12,987.70/x
  3. Step 3: Cross multiply
    23,128.29x = 34,660.28 × 12,987.70
  4. Step 4: Simplify right side
    23,128.29x = 450,157,430.46
  5. Step 5: Solve for x
    x = 450,157,430.46/23,128.29
  6. Step 6: Final answer
    x = 19,463.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.