Home / 15,315.64-21,134.90-8,601.16

Finding the Fourth Proportional to 15,315.64, 21,134.90 and 8,601.16

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Solution

The fourth proportional to 15,315.64, 21,134.90 and 8,601.16 is: 11,869.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.64 : 21,134.90 = 8,601.16 : x
  2. Step 2: Convert to fraction form
    15,315.64/21,134.90 = 8,601.16/x
  3. Step 3: Cross multiply
    15,315.64x = 21,134.90 × 8,601.16
  4. Step 4: Simplify right side
    15,315.64x = 181,784,656.48
  5. Step 5: Solve for x
    x = 181,784,656.48/15,315.64
  6. Step 6: Final answer
    x = 11,869.22

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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.