Home / 22,670.99-31,285.72-12,979.16

Finding the Fourth Proportional to 22,670.99, 31,285.72 and 12,979.16

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Solution

The fourth proportional to 22,670.99, 31,285.72 and 12,979.16 is: 17,911.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,670.99 : 31,285.72 = 12,979.16 : x
  2. Step 2: Convert to fraction form
    22,670.99/31,285.72 = 12,979.16/x
  3. Step 3: Cross multiply
    22,670.99x = 31,285.72 × 12,979.16
  4. Step 4: Simplify right side
    22,670.99x = 406,062,394.20
  5. Step 5: Solve for x
    x = 406,062,394.20/22,670.99
  6. Step 6: Final answer
    x = 17,911.10

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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.