Home / 13,157.52-18,162.78-9,381.30

Finding the Fourth Proportional to 13,157.52, 18,162.78 and 9,381.30

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Solution

The fourth proportional to 13,157.52, 18,162.78 and 9,381.30 is: 12,950.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.52 : 18,162.78 = 9,381.30 : x
  2. Step 2: Convert to fraction form
    13,157.52/18,162.78 = 9,381.30/x
  3. Step 3: Cross multiply
    13,157.52x = 18,162.78 × 9,381.30
  4. Step 4: Simplify right side
    13,157.52x = 170,390,488.01
  5. Step 5: Solve for x
    x = 170,390,488.01/13,157.52
  6. Step 6: Final answer
    x = 12,950.05

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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.