Home / 15,240.76-20,985.50-13,341.72

Finding the Fourth Proportional to 15,240.76, 20,985.50 and 13,341.72

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Solution

The fourth proportional to 15,240.76, 20,985.50 and 13,341.72 is: 18,370.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,240.76 : 20,985.50 = 13,341.72 : x
  2. Step 2: Convert to fraction form
    15,240.76/20,985.50 = 13,341.72/x
  3. Step 3: Cross multiply
    15,240.76x = 20,985.50 × 13,341.72
  4. Step 4: Simplify right side
    15,240.76x = 279,982,493.42
  5. Step 5: Solve for x
    x = 279,982,493.42/15,240.76
  6. Step 6: Final answer
    x = 18,370.64

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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.