Home / 18,711.02-25,820.56-11,153.45

Finding the Fourth Proportional to 18,711.02, 25,820.56 and 11,153.45

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Solution

The fourth proportional to 18,711.02, 25,820.56 and 11,153.45 is: 15,391.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.02 : 25,820.56 = 11,153.45 : x
  2. Step 2: Convert to fraction form
    18,711.02/25,820.56 = 11,153.45/x
  3. Step 3: Cross multiply
    18,711.02x = 25,820.56 × 11,153.45
  4. Step 4: Simplify right side
    18,711.02x = 287,988,389.48
  5. Step 5: Solve for x
    x = 287,988,389.48/18,711.02
  6. Step 6: Final answer
    x = 15,391.38

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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.