Home / 15,311.64-21,125.52-9,264.72

Finding the Fourth Proportional to 15,311.64, 21,125.52 and 9,264.72

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Solution

The fourth proportional to 15,311.64, 21,125.52 and 9,264.72 is: 12,782.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.64 : 21,125.52 = 9,264.72 : x
  2. Step 2: Convert to fraction form
    15,311.64/21,125.52 = 9,264.72/x
  3. Step 3: Cross multiply
    15,311.64x = 21,125.52 × 9,264.72
  4. Step 4: Simplify right side
    15,311.64x = 195,722,027.65
  5. Step 5: Solve for x
    x = 195,722,027.65/15,311.64
  6. Step 6: Final answer
    x = 12,782.56

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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.