Home / 15,835.29-21,851.96-9,121.11

Finding the Fourth Proportional to 15,835.29, 21,851.96 and 9,121.11

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Solution

The fourth proportional to 15,835.29, 21,851.96 and 9,121.11 is: 12,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,835.29 : 21,851.96 = 9,121.11 : x
  2. Step 2: Convert to fraction form
    15,835.29/21,851.96 = 9,121.11/x
  3. Step 3: Cross multiply
    15,835.29x = 21,851.96 × 9,121.11
  4. Step 4: Simplify right side
    15,835.29x = 199,314,085.27
  5. Step 5: Solve for x
    x = 199,314,085.27/15,835.29
  6. Step 6: Final answer
    x = 12,586.70

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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.