Home / 15,373.53-21,215.43-8,659.19

Finding the Fourth Proportional to 15,373.53, 21,215.43 and 8,659.19

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Solution

The fourth proportional to 15,373.53, 21,215.43 and 8,659.19 is: 11,949.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,373.53 : 21,215.43 = 8,659.19 : x
  2. Step 2: Convert to fraction form
    15,373.53/21,215.43 = 8,659.19/x
  3. Step 3: Cross multiply
    15,373.53x = 21,215.43 × 8,659.19
  4. Step 4: Simplify right side
    15,373.53x = 183,708,492.34
  5. Step 5: Solve for x
    x = 183,708,492.34/15,373.53
  6. Step 6: Final answer
    x = 11,949.66

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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.