Home / 13,999.52-19,319.34-7,711.90

Finding the Fourth Proportional to 13,999.52, 19,319.34 and 7,711.90

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Solution

The fourth proportional to 13,999.52, 19,319.34 and 7,711.90 is: 10,642.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.52 : 19,319.34 = 7,711.90 : x
  2. Step 2: Convert to fraction form
    13,999.52/19,319.34 = 7,711.90/x
  3. Step 3: Cross multiply
    13,999.52x = 19,319.34 × 7,711.90
  4. Step 4: Simplify right side
    13,999.52x = 148,988,818.15
  5. Step 5: Solve for x
    x = 148,988,818.15/13,999.52
  6. Step 6: Final answer
    x = 10,642.42

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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.