Home / 15,934.12-21,985.46-9,219.58

Finding the Fourth Proportional to 15,934.12, 21,985.46 and 9,219.58

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Solution

The fourth proportional to 15,934.12, 21,985.46 and 9,219.58 is: 12,720.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.12 : 21,985.46 = 9,219.58 : x
  2. Step 2: Convert to fraction form
    15,934.12/21,985.46 = 9,219.58/x
  3. Step 3: Cross multiply
    15,934.12x = 21,985.46 × 9,219.58
  4. Step 4: Simplify right side
    15,934.12x = 202,696,707.31
  5. Step 5: Solve for x
    x = 202,696,707.31/15,934.12
  6. Step 6: Final answer
    x = 12,720.92

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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.