Home / 13,053.40-18,012.60-7,387.85

Finding the Fourth Proportional to 13,053.40, 18,012.60 and 7,387.85

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Solution

The fourth proportional to 13,053.40, 18,012.60 and 7,387.85 is: 10,194.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.40 : 18,012.60 = 7,387.85 : x
  2. Step 2: Convert to fraction form
    13,053.40/18,012.60 = 7,387.85/x
  3. Step 3: Cross multiply
    13,053.40x = 18,012.60 × 7,387.85
  4. Step 4: Simplify right side
    13,053.40x = 133,074,386.91
  5. Step 5: Solve for x
    x = 133,074,386.91/13,053.40
  6. Step 6: Final answer
    x = 10,194.61

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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.