Home / 20,281.08-27,962.40-15,506.88

Finding the Fourth Proportional to 20,281.08, 27,962.40 and 15,506.88

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Solution

The fourth proportional to 20,281.08, 27,962.40 and 15,506.88 is: 21,380.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.08 : 27,962.40 = 15,506.88 : x
  2. Step 2: Convert to fraction form
    20,281.08/27,962.40 = 15,506.88/x
  3. Step 3: Cross multiply
    20,281.08x = 27,962.40 × 15,506.88
  4. Step 4: Simplify right side
    20,281.08x = 433,609,581.31
  5. Step 5: Solve for x
    x = 433,609,581.31/20,281.08
  6. Step 6: Final answer
    x = 21,380.00

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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.