Home / 15,311.29-21,127.95-8,597.65

Finding the Fourth Proportional to 15,311.29, 21,127.95 and 8,597.65

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Solution

The fourth proportional to 15,311.29, 21,127.95 and 8,597.65 is: 11,863.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.29 : 21,127.95 = 8,597.65 : x
  2. Step 2: Convert to fraction form
    15,311.29/21,127.95 = 8,597.65/x
  3. Step 3: Cross multiply
    15,311.29x = 21,127.95 × 8,597.65
  4. Step 4: Simplify right side
    15,311.29x = 181,650,719.32
  5. Step 5: Solve for x
    x = 181,650,719.32/15,311.29
  6. Step 6: Final answer
    x = 11,863.84

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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.