Home / 15,453.12-21,327.12-9,482.70

Finding the Fourth Proportional to 15,453.12, 21,327.12 and 9,482.70

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Solution

The fourth proportional to 15,453.12, 21,327.12 and 9,482.70 is: 13,087.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.12 : 21,327.12 = 9,482.70 : x
  2. Step 2: Convert to fraction form
    15,453.12/21,327.12 = 9,482.70/x
  3. Step 3: Cross multiply
    15,453.12x = 21,327.12 × 9,482.70
  4. Step 4: Simplify right side
    15,453.12x = 202,238,680.82
  5. Step 5: Solve for x
    x = 202,238,680.82/15,453.12
  6. Step 6: Final answer
    x = 13,087.24

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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.