Home / 13,385.90-18,472.52-7,417.56

Finding the Fourth Proportional to 13,385.90, 18,472.52 and 7,417.56

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Solution

The fourth proportional to 13,385.90, 18,472.52 and 7,417.56 is: 10,236.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.90 : 18,472.52 = 7,417.56 : x
  2. Step 2: Convert to fraction form
    13,385.90/18,472.52 = 7,417.56/x
  3. Step 3: Cross multiply
    13,385.90x = 18,472.52 × 7,417.56
  4. Step 4: Simplify right side
    13,385.90x = 137,021,025.45
  5. Step 5: Solve for x
    x = 137,021,025.45/13,385.90
  6. Step 6: Final answer
    x = 10,236.22

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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.