Home / 10,381.60-15,555.30-5,991.40

Finding the Fourth Proportional to 10,381.60, 15,555.30 and 5,991.40

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Solution

The fourth proportional to 10,381.60, 15,555.30 and 5,991.40 is: 8,977.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.60 : 15,555.30 = 5,991.40 : x
  2. Step 2: Convert to fraction form
    10,381.60/15,555.30 = 5,991.40/x
  3. Step 3: Cross multiply
    10,381.60x = 15,555.30 × 5,991.40
  4. Step 4: Simplify right side
    10,381.60x = 93,198,024.42
  5. Step 5: Solve for x
    x = 93,198,024.42/10,381.60
  6. Step 6: Final answer
    x = 8,977.23

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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.