Home / 18,342.89-25,313.06-10,385.05

Finding the Fourth Proportional to 18,342.89, 25,313.06 and 10,385.05

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Solution

The fourth proportional to 18,342.89, 25,313.06 and 10,385.05 is: 14,331.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.89 : 25,313.06 = 10,385.05 : x
  2. Step 2: Convert to fraction form
    18,342.89/25,313.06 = 10,385.05/x
  3. Step 3: Cross multiply
    18,342.89x = 25,313.06 × 10,385.05
  4. Step 4: Simplify right side
    18,342.89x = 262,877,278.55
  5. Step 5: Solve for x
    x = 262,877,278.55/18,342.89
  6. Step 6: Final answer
    x = 14,331.29

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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.