Home / 27,939.60-38,541.60-18,987.12

Finding the Fourth Proportional to 27,939.60, 38,541.60 and 18,987.12

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Solution

The fourth proportional to 27,939.60, 38,541.60 and 18,987.12 is: 26,192.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,939.60 : 38,541.60 = 18,987.12 : x
  2. Step 2: Convert to fraction form
    27,939.60/38,541.60 = 18,987.12/x
  3. Step 3: Cross multiply
    27,939.60x = 38,541.60 × 18,987.12
  4. Step 4: Simplify right side
    27,939.60x = 731,793,984.19
  5. Step 5: Solve for x
    x = 731,793,984.19/27,939.60
  6. Step 6: Final answer
    x = 26,192.00

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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.