Home / 14,738.64-20,331.72-9,139.92

Finding the Fourth Proportional to 14,738.64, 20,331.72 and 9,139.92

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Solution

The fourth proportional to 14,738.64, 20,331.72 and 9,139.92 is: 12,608.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,738.64 : 20,331.72 = 9,139.92 : x
  2. Step 2: Convert to fraction form
    14,738.64/20,331.72 = 9,139.92/x
  3. Step 3: Cross multiply
    14,738.64x = 20,331.72 × 9,139.92
  4. Step 4: Simplify right side
    14,738.64x = 185,830,294.26
  5. Step 5: Solve for x
    x = 185,830,294.26/14,738.64
  6. Step 6: Final answer
    x = 12,608.37

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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.