Home / 13,489.74-18,615.76-7,521.48

Finding the Fourth Proportional to 13,489.74, 18,615.76 and 7,521.48

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Solution

The fourth proportional to 13,489.74, 18,615.76 and 7,521.48 is: 10,379.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.74 : 18,615.76 = 7,521.48 : x
  2. Step 2: Convert to fraction form
    13,489.74/18,615.76 = 7,521.48/x
  3. Step 3: Cross multiply
    13,489.74x = 18,615.76 × 7,521.48
  4. Step 4: Simplify right side
    13,489.74x = 140,018,066.52
  5. Step 5: Solve for x
    x = 140,018,066.52/13,489.74
  6. Step 6: Final answer
    x = 10,379.60

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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.