Home / 21,737.18-30,001.86-13,242.08

Finding the Fourth Proportional to 21,737.18, 30,001.86 and 13,242.08

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Solution

The fourth proportional to 21,737.18, 30,001.86 and 13,242.08 is: 18,276.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,737.18 : 30,001.86 = 13,242.08 : x
  2. Step 2: Convert to fraction form
    21,737.18/30,001.86 = 13,242.08/x
  3. Step 3: Cross multiply
    21,737.18x = 30,001.86 × 13,242.08
  4. Step 4: Simplify right side
    21,737.18x = 397,287,030.27
  5. Step 5: Solve for x
    x = 397,287,030.27/21,737.18
  6. Step 6: Final answer
    x = 18,276.84

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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.