Home / 15,583.71-21,506.88-8,867.90

Finding the Fourth Proportional to 15,583.71, 21,506.88 and 8,867.90

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Solution

The fourth proportional to 15,583.71, 21,506.88 and 8,867.90 is: 12,238.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,583.71 : 21,506.88 = 8,867.90 : x
  2. Step 2: Convert to fraction form
    15,583.71/21,506.88 = 8,867.90/x
  3. Step 3: Cross multiply
    15,583.71x = 21,506.88 × 8,867.90
  4. Step 4: Simplify right side
    15,583.71x = 190,720,861.15
  5. Step 5: Solve for x
    x = 190,720,861.15/15,583.71
  6. Step 6: Final answer
    x = 12,238.48

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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.