Home / 15,475.59-21,361.40-9,101.90

Finding the Fourth Proportional to 15,475.59, 21,361.40 and 9,101.90

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Solution

The fourth proportional to 15,475.59, 21,361.40 and 9,101.90 is: 12,563.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.59 : 21,361.40 = 9,101.90 : x
  2. Step 2: Convert to fraction form
    15,475.59/21,361.40 = 9,101.90/x
  3. Step 3: Cross multiply
    15,475.59x = 21,361.40 × 9,101.90
  4. Step 4: Simplify right side
    15,475.59x = 194,429,326.66
  5. Step 5: Solve for x
    x = 194,429,326.66/15,475.59
  6. Step 6: Final answer
    x = 12,563.61

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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.