Home / 15,475.80-21,354.84-8,670.08

Finding the Fourth Proportional to 15,475.80, 21,354.84 and 8,670.08

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Solution

The fourth proportional to 15,475.80, 21,354.84 and 8,670.08 is: 11,963.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.80 : 21,354.84 = 8,670.08 : x
  2. Step 2: Convert to fraction form
    15,475.80/21,354.84 = 8,670.08/x
  3. Step 3: Cross multiply
    15,475.80x = 21,354.84 × 8,670.08
  4. Step 4: Simplify right side
    15,475.80x = 185,148,171.19
  5. Step 5: Solve for x
    x = 185,148,171.19/15,475.80
  6. Step 6: Final answer
    x = 11,963.72

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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.