Home / 13,320.76-18,381.65-7,655.52

Finding the Fourth Proportional to 13,320.76, 18,381.65 and 7,655.52

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Solution

The fourth proportional to 13,320.76, 18,381.65 and 7,655.52 is: 10,564.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.76 : 18,381.65 = 7,655.52 : x
  2. Step 2: Convert to fraction form
    13,320.76/18,381.65 = 7,655.52/x
  3. Step 3: Cross multiply
    13,320.76x = 18,381.65 × 7,655.52
  4. Step 4: Simplify right side
    13,320.76x = 140,721,050.93
  5. Step 5: Solve for x
    x = 140,721,050.93/13,320.76
  6. Step 6: Final answer
    x = 10,564.04

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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.