Home / 13,381.48-20,070.64-3,521.52

Finding the Fourth Proportional to 13,381.48, 20,070.64 and 3,521.52

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Solution

The fourth proportional to 13,381.48, 20,070.64 and 3,521.52 is: 5,281.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.48 : 20,070.64 = 3,521.52 : x
  2. Step 2: Convert to fraction form
    13,381.48/20,070.64 = 3,521.52/x
  3. Step 3: Cross multiply
    13,381.48x = 20,070.64 × 3,521.52
  4. Step 4: Simplify right side
    13,381.48x = 70,679,160.17
  5. Step 5: Solve for x
    x = 70,679,160.17/13,381.48
  6. Step 6: Final answer
    x = 5,281.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.