Home / 15,475.21-21,360.88-9,101.53

Finding the Fourth Proportional to 15,475.21, 21,360.88 and 9,101.53

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Solution

The fourth proportional to 15,475.21, 21,360.88 and 9,101.53 is: 12,563.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.21 : 21,360.88 = 9,101.53 : x
  2. Step 2: Convert to fraction form
    15,475.21/21,360.88 = 9,101.53/x
  3. Step 3: Cross multiply
    15,475.21x = 21,360.88 × 9,101.53
  4. Step 4: Simplify right side
    15,475.21x = 194,416,690.15
  5. Step 5: Solve for x
    x = 194,416,690.15/15,475.21
  6. Step 6: Final answer
    x = 12,563.11

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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.