Home / 9,521.44-13,139.70-5,487.34

Finding the Fourth Proportional to 9,521.44, 13,139.70 and 5,487.34

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Solution

The fourth proportional to 9,521.44, 13,139.70 and 5,487.34 is: 7,572.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,521.44 : 13,139.70 = 5,487.34 : x
  2. Step 2: Convert to fraction form
    9,521.44/13,139.70 = 5,487.34/x
  3. Step 3: Cross multiply
    9,521.44x = 13,139.70 × 5,487.34
  4. Step 4: Simplify right side
    9,521.44x = 72,102,001.40
  5. Step 5: Solve for x
    x = 72,102,001.40/9,521.44
  6. Step 6: Final answer
    x = 7,572.59

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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.