Home / 21,300.74-29,395.14-12,353.55

Finding the Fourth Proportional to 21,300.74, 29,395.14 and 12,353.55

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Solution

The fourth proportional to 21,300.74, 29,395.14 and 12,353.55 is: 17,047.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.74 : 29,395.14 = 12,353.55 : x
  2. Step 2: Convert to fraction form
    21,300.74/29,395.14 = 12,353.55/x
  3. Step 3: Cross multiply
    21,300.74x = 29,395.14 × 12,353.55
  4. Step 4: Simplify right side
    21,300.74x = 363,134,175.19
  5. Step 5: Solve for x
    x = 363,134,175.19/21,300.74
  6. Step 6: Final answer
    x = 17,047.96

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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.