Home / 15,722.17-21,699.67-9,012.29

Finding the Fourth Proportional to 15,722.17, 21,699.67 and 9,012.29

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Solution

The fourth proportional to 15,722.17, 21,699.67 and 9,012.29 is: 12,438.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.17 : 21,699.67 = 9,012.29 : x
  2. Step 2: Convert to fraction form
    15,722.17/21,699.67 = 9,012.29/x
  3. Step 3: Cross multiply
    15,722.17x = 21,699.67 × 9,012.29
  4. Step 4: Simplify right side
    15,722.17x = 195,563,718.94
  5. Step 5: Solve for x
    x = 195,563,718.94/15,722.17
  6. Step 6: Final answer
    x = 12,438.72

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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.