Home / 27,685.04-38,205.20-15,109.76

Finding the Fourth Proportional to 27,685.04, 38,205.20 and 15,109.76

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Solution

The fourth proportional to 27,685.04, 38,205.20 and 15,109.76 is: 20,851.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,685.04 : 38,205.20 = 15,109.76 : x
  2. Step 2: Convert to fraction form
    27,685.04/38,205.20 = 15,109.76/x
  3. Step 3: Cross multiply
    27,685.04x = 38,205.20 × 15,109.76
  4. Step 4: Simplify right side
    27,685.04x = 577,271,402.75
  5. Step 5: Solve for x
    x = 577,271,402.75/27,685.04
  6. Step 6: Final answer
    x = 20,851.38

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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.