Home / 15,432.12-21,288.69-9,453.24

Finding the Fourth Proportional to 15,432.12, 21,288.69 and 9,453.24

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Solution

The fourth proportional to 15,432.12, 21,288.69 and 9,453.24 is: 13,040.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.12 : 21,288.69 = 9,453.24 : x
  2. Step 2: Convert to fraction form
    15,432.12/21,288.69 = 9,453.24/x
  3. Step 3: Cross multiply
    15,432.12x = 21,288.69 × 9,453.24
  4. Step 4: Simplify right side
    15,432.12x = 201,247,095.86
  5. Step 5: Solve for x
    x = 201,247,095.86/15,432.12
  6. Step 6: Final answer
    x = 13,040.79

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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.