Home / 27,988.79-38,632.47-18,435.65

Finding the Fourth Proportional to 27,988.79, 38,632.47 and 18,435.65

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Solution

The fourth proportional to 27,988.79, 38,632.47 and 18,435.65 is: 25,446.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988.79 : 38,632.47 = 18,435.65 : x
  2. Step 2: Convert to fraction form
    27,988.79/38,632.47 = 18,435.65/x
  3. Step 3: Cross multiply
    27,988.79x = 38,632.47 × 18,435.65
  4. Step 4: Simplify right side
    27,988.79x = 712,214,702.42
  5. Step 5: Solve for x
    x = 712,214,702.42/27,988.79
  6. Step 6: Final answer
    x = 25,446.43

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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.