Home / 28,132-38,818.80-15,555.04

Finding the Fourth Proportional to 28,132, 38,818.80 and 15,555.04

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Solution

The fourth proportional to 28,132, 38,818.80 and 15,555.04 is: 21,464.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132 : 38,818.80 = 15,555.04 : x
  2. Step 2: Convert to fraction form
    28,132/38,818.80 = 15,555.04/x
  3. Step 3: Cross multiply
    28,132x = 38,818.80 × 15,555.04
  4. Step 4: Simplify right side
    28,132x = 603,827,986.75
  5. Step 5: Solve for x
    x = 603,827,986.75/28,132
  6. Step 6: Final answer
    x = 21,464.10

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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.