Home / 13,438.91-18,569.52-9,674.57

Finding the Fourth Proportional to 13,438.91, 18,569.52 and 9,674.57

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Solution

The fourth proportional to 13,438.91, 18,569.52 and 9,674.57 is: 13,368.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.91 : 18,569.52 = 9,674.57 : x
  2. Step 2: Convert to fraction form
    13,438.91/18,569.52 = 9,674.57/x
  3. Step 3: Cross multiply
    13,438.91x = 18,569.52 × 9,674.57
  4. Step 4: Simplify right side
    13,438.91x = 179,652,167.53
  5. Step 5: Solve for x
    x = 179,652,167.53/13,438.91
  6. Step 6: Final answer
    x = 13,368.06

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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.