Home / 27,955.16-38,578.84-15,209.13

Finding the Fourth Proportional to 27,955.16, 38,578.84 and 15,209.13

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Solution

The fourth proportional to 27,955.16, 38,578.84 and 15,209.13 is: 20,988.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,955.16 : 38,578.84 = 15,209.13 : x
  2. Step 2: Convert to fraction form
    27,955.16/38,578.84 = 15,209.13/x
  3. Step 3: Cross multiply
    27,955.16x = 38,578.84 × 15,209.13
  4. Step 4: Simplify right side
    27,955.16x = 586,750,554.79
  5. Step 5: Solve for x
    x = 586,750,554.79/27,955.16
  6. Step 6: Final answer
    x = 20,988.99

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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.