Home / 21,420.42-29,560.14-13,036.92

Finding the Fourth Proportional to 21,420.42, 29,560.14 and 13,036.92

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Solution

The fourth proportional to 21,420.42, 29,560.14 and 13,036.92 is: 17,990.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.42 : 29,560.14 = 13,036.92 : x
  2. Step 2: Convert to fraction form
    21,420.42/29,560.14 = 13,036.92/x
  3. Step 3: Cross multiply
    21,420.42x = 29,560.14 × 13,036.92
  4. Step 4: Simplify right side
    21,420.42x = 385,373,180.37
  5. Step 5: Solve for x
    x = 385,373,180.37/21,420.42
  6. Step 6: Final answer
    x = 17,990.93

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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.