Home / 17,985.24-26,981.10-8,129.16

Finding the Fourth Proportional to 17,985.24, 26,981.10 and 8,129.16

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Solution

The fourth proportional to 17,985.24, 26,981.10 and 8,129.16 is: 12,195.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,985.24 : 26,981.10 = 8,129.16 : x
  2. Step 2: Convert to fraction form
    17,985.24/26,981.10 = 8,129.16/x
  3. Step 3: Cross multiply
    17,985.24x = 26,981.10 × 8,129.16
  4. Step 4: Simplify right side
    17,985.24x = 219,333,678.88
  5. Step 5: Solve for x
    x = 219,333,678.88/17,985.24
  6. Step 6: Final answer
    x = 12,195.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.