Home / 18,715.02-25,820.53-12,344.78

Finding the Fourth Proportional to 18,715.02, 25,820.53 and 12,344.78

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Solution

The fourth proportional to 18,715.02, 25,820.53 and 12,344.78 is: 17,031.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715.02 : 25,820.53 = 12,344.78 : x
  2. Step 2: Convert to fraction form
    18,715.02/25,820.53 = 12,344.78/x
  3. Step 3: Cross multiply
    18,715.02x = 25,820.53 × 12,344.78
  4. Step 4: Simplify right side
    18,715.02x = 318,748,810.20
  5. Step 5: Solve for x
    x = 318,748,810.20/18,715.02
  6. Step 6: Final answer
    x = 17,031.71

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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.