Home / 28,220.18-38,943.27-15,644.93

Finding the Fourth Proportional to 28,220.18, 38,943.27 and 15,644.93

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Solution

The fourth proportional to 28,220.18, 38,943.27 and 15,644.93 is: 21,589.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.18 : 38,943.27 = 15,644.93 : x
  2. Step 2: Convert to fraction form
    28,220.18/38,943.27 = 15,644.93/x
  3. Step 3: Cross multiply
    28,220.18x = 38,943.27 × 15,644.93
  4. Step 4: Simplify right side
    28,220.18x = 609,264,538.40
  5. Step 5: Solve for x
    x = 609,264,538.40/28,220.18
  6. Step 6: Final answer
    x = 21,589.68

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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.