Home / 18,312.10-25,261.42-11,586.40

Finding the Fourth Proportional to 18,312.10, 25,261.42 and 11,586.40

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Solution

The fourth proportional to 18,312.10, 25,261.42 and 11,586.40 is: 15,983.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.10 : 25,261.42 = 11,586.40 : x
  2. Step 2: Convert to fraction form
    18,312.10/25,261.42 = 11,586.40/x
  3. Step 3: Cross multiply
    18,312.10x = 25,261.42 × 11,586.40
  4. Step 4: Simplify right side
    18,312.10x = 292,688,916.69
  5. Step 5: Solve for x
    x = 292,688,916.69/18,312.10
  6. Step 6: Final answer
    x = 15,983.36

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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.