Home / 18,657.11-25,741.71-12,985.49

Finding the Fourth Proportional to 18,657.11, 25,741.71 and 12,985.49

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Solution

The fourth proportional to 18,657.11, 25,741.71 and 12,985.49 is: 17,916.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.11 : 25,741.71 = 12,985.49 : x
  2. Step 2: Convert to fraction form
    18,657.11/25,741.71 = 12,985.49/x
  3. Step 3: Cross multiply
    18,657.11x = 25,741.71 × 12,985.49
  4. Step 4: Simplify right side
    18,657.11x = 334,268,589.08
  5. Step 5: Solve for x
    x = 334,268,589.08/18,657.11
  6. Step 6: Final answer
    x = 17,916.42

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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.