Home / 13,287.98-18,337.71-7,319.76

Finding the Fourth Proportional to 13,287.98, 18,337.71 and 7,319.76

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Solution

The fourth proportional to 13,287.98, 18,337.71 and 7,319.76 is: 10,101.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.98 : 18,337.71 = 7,319.76 : x
  2. Step 2: Convert to fraction form
    13,287.98/18,337.71 = 7,319.76/x
  3. Step 3: Cross multiply
    13,287.98x = 18,337.71 × 7,319.76
  4. Step 4: Simplify right side
    13,287.98x = 134,227,636.15
  5. Step 5: Solve for x
    x = 134,227,636.15/13,287.98
  6. Step 6: Final answer
    x = 10,101.44

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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.