Home / 13,165.50-18,167.88-7,197.40

Finding the Fourth Proportional to 13,165.50, 18,167.88 and 7,197.40

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Solution

The fourth proportional to 13,165.50, 18,167.88 and 7,197.40 is: 9,932.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.50 : 18,167.88 = 7,197.40 : x
  2. Step 2: Convert to fraction form
    13,165.50/18,167.88 = 7,197.40/x
  3. Step 3: Cross multiply
    13,165.50x = 18,167.88 × 7,197.40
  4. Step 4: Simplify right side
    13,165.50x = 130,761,499.51
  5. Step 5: Solve for x
    x = 130,761,499.51/13,165.50
  6. Step 6: Final answer
    x = 9,932.13

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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.