Home / 18,300.28-25,254.44-9,916.78

Finding the Fourth Proportional to 18,300.28, 25,254.44 and 9,916.78

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Solution

The fourth proportional to 18,300.28, 25,254.44 and 9,916.78 is: 13,685.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300.28 : 25,254.44 = 9,916.78 : x
  2. Step 2: Convert to fraction form
    18,300.28/25,254.44 = 9,916.78/x
  3. Step 3: Cross multiply
    18,300.28x = 25,254.44 × 9,916.78
  4. Step 4: Simplify right side
    18,300.28x = 250,442,725.50
  5. Step 5: Solve for x
    x = 250,442,725.50/18,300.28
  6. Step 6: Final answer
    x = 13,685.19

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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.