Home / 27,898.68-38,486.64-18,475.12

Finding the Fourth Proportional to 27,898.68, 38,486.64 and 18,475.12

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Solution

The fourth proportional to 27,898.68, 38,486.64 and 18,475.12 is: 25,486.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,898.68 : 38,486.64 = 18,475.12 : x
  2. Step 2: Convert to fraction form
    27,898.68/38,486.64 = 18,475.12/x
  3. Step 3: Cross multiply
    27,898.68x = 38,486.64 × 18,475.12
  4. Step 4: Simplify right side
    27,898.68x = 711,045,292.40
  5. Step 5: Solve for x
    x = 711,045,292.40/27,898.68
  6. Step 6: Final answer
    x = 25,486.70

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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.