Home / 28,001.04-38,641.44-15,425.80

Finding the Fourth Proportional to 28,001.04, 38,641.44 and 15,425.80

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Solution

The fourth proportional to 28,001.04, 38,641.44 and 15,425.80 is: 21,287.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.04 : 38,641.44 = 15,425.80 : x
  2. Step 2: Convert to fraction form
    28,001.04/38,641.44 = 15,425.80/x
  3. Step 3: Cross multiply
    28,001.04x = 38,641.44 × 15,425.80
  4. Step 4: Simplify right side
    28,001.04x = 596,075,125.15
  5. Step 5: Solve for x
    x = 596,075,125.15/28,001.04
  6. Step 6: Final answer
    x = 21,287.61

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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.