Home / 13,158.59-18,158.86-7,108.83

Finding the Fourth Proportional to 13,158.59, 18,158.86 and 7,108.83

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Solution

The fourth proportional to 13,158.59, 18,158.86 and 7,108.83 is: 9,810.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.59 : 18,158.86 = 7,108.83 : x
  2. Step 2: Convert to fraction form
    13,158.59/18,158.86 = 7,108.83/x
  3. Step 3: Cross multiply
    13,158.59x = 18,158.86 × 7,108.83
  4. Step 4: Simplify right side
    13,158.59x = 129,088,213.19
  5. Step 5: Solve for x
    x = 129,088,213.19/13,158.59
  6. Step 6: Final answer
    x = 9,810.19

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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.