Home / 15,689.32-21,652.29-8,975.84

Finding the Fourth Proportional to 15,689.32, 21,652.29 and 8,975.84

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Solution

The fourth proportional to 15,689.32, 21,652.29 and 8,975.84 is: 12,387.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,689.32 : 21,652.29 = 8,975.84 : x
  2. Step 2: Convert to fraction form
    15,689.32/21,652.29 = 8,975.84/x
  3. Step 3: Cross multiply
    15,689.32x = 21,652.29 × 8,975.84
  4. Step 4: Simplify right side
    15,689.32x = 194,347,382.41
  5. Step 5: Solve for x
    x = 194,347,382.41/15,689.32
  6. Step 6: Final answer
    x = 12,387.24

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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.