Home / 27,764.16-38,310-15,827.72

Finding the Fourth Proportional to 27,764.16, 38,310 and 15,827.72

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Solution

The fourth proportional to 27,764.16, 38,310 and 15,827.72 is: 21,839.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,764.16 : 38,310 = 15,827.72 : x
  2. Step 2: Convert to fraction form
    27,764.16/38,310 = 15,827.72/x
  3. Step 3: Cross multiply
    27,764.16x = 38,310 × 15,827.72
  4. Step 4: Simplify right side
    27,764.16x = 606,359,953.20
  5. Step 5: Solve for x
    x = 606,359,953.20/27,764.16
  6. Step 6: Final answer
    x = 21,839.66

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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.