Home / 15,929.31-21,980.53-8,758.04

Finding the Fourth Proportional to 15,929.31, 21,980.53 and 8,758.04

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Solution

The fourth proportional to 15,929.31, 21,980.53 and 8,758.04 is: 12,085.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,929.31 : 21,980.53 = 8,758.04 : x
  2. Step 2: Convert to fraction form
    15,929.31/21,980.53 = 8,758.04/x
  3. Step 3: Cross multiply
    15,929.31x = 21,980.53 × 8,758.04
  4. Step 4: Simplify right side
    15,929.31x = 192,506,360.96
  5. Step 5: Solve for x
    x = 192,506,360.96/15,929.31
  6. Step 6: Final answer
    x = 12,085.04

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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.