Home / 13,368.38-18,435.74-9,972.90

Finding the Fourth Proportional to 13,368.38, 18,435.74 and 9,972.90

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Solution

The fourth proportional to 13,368.38, 18,435.74 and 9,972.90 is: 13,753.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.38 : 18,435.74 = 9,972.90 : x
  2. Step 2: Convert to fraction form
    13,368.38/18,435.74 = 9,972.90/x
  3. Step 3: Cross multiply
    13,368.38x = 18,435.74 × 9,972.90
  4. Step 4: Simplify right side
    13,368.38x = 183,857,791.45
  5. Step 5: Solve for x
    x = 183,857,791.45/13,368.38
  6. Step 6: Final answer
    x = 13,753.18

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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.