Home / 13,542.48-18,689.54-7,574.70

Finding the Fourth Proportional to 13,542.48, 18,689.54 and 7,574.70

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Solution

The fourth proportional to 13,542.48, 18,689.54 and 7,574.70 is: 10,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,542.48 : 18,689.54 = 7,574.70 : x
  2. Step 2: Convert to fraction form
    13,542.48/18,689.54 = 7,574.70/x
  3. Step 3: Cross multiply
    13,542.48x = 18,689.54 × 7,574.70
  4. Step 4: Simplify right side
    13,542.48x = 141,567,620.76
  5. Step 5: Solve for x
    x = 141,567,620.76/13,542.48
  6. Step 6: Final answer
    x = 10,453.60

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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.