Home / 31,095.54-42,905.43-18,348.08

Finding the Fourth Proportional to 31,095.54, 42,905.43 and 18,348.08

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Solution

The fourth proportional to 31,095.54, 42,905.43 and 18,348.08 is: 25,316.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,095.54 : 42,905.43 = 18,348.08 : x
  2. Step 2: Convert to fraction form
    31,095.54/42,905.43 = 18,348.08/x
  3. Step 3: Cross multiply
    31,095.54x = 42,905.43 × 18,348.08
  4. Step 4: Simplify right side
    31,095.54x = 787,232,047.55
  5. Step 5: Solve for x
    x = 787,232,047.55/31,095.54
  6. Step 6: Final answer
    x = 25,316.56

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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.