Home / 31,489.08-43,436.46-18,916.92

Finding the Fourth Proportional to 31,489.08, 43,436.46 and 18,916.92

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Solution

The fourth proportional to 31,489.08, 43,436.46 and 18,916.92 is: 26,094.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,489.08 : 43,436.46 = 18,916.92 : x
  2. Step 2: Convert to fraction form
    31,489.08/43,436.46 = 18,916.92/x
  3. Step 3: Cross multiply
    31,489.08x = 43,436.46 × 18,916.92
  4. Step 4: Simplify right side
    31,489.08x = 821,684,038.90
  5. Step 5: Solve for x
    x = 821,684,038.90/31,489.08
  6. Step 6: Final answer
    x = 26,094.25

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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.