Home / 27,882.61-38,478.86-15,307.63

Finding the Fourth Proportional to 27,882.61, 38,478.86 and 15,307.63

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Solution

The fourth proportional to 27,882.61, 38,478.86 and 15,307.63 is: 21,125.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,882.61 : 38,478.86 = 15,307.63 : x
  2. Step 2: Convert to fraction form
    27,882.61/38,478.86 = 15,307.63/x
  3. Step 3: Cross multiply
    27,882.61x = 38,478.86 × 15,307.63
  4. Step 4: Simplify right side
    27,882.61x = 589,020,151.70
  5. Step 5: Solve for x
    x = 589,020,151.70/27,882.61
  6. Step 6: Final answer
    x = 21,125.00

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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.