Home / 31,083.60-42,878.52-18,505.92

Finding the Fourth Proportional to 31,083.60, 42,878.52 and 18,505.92

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Solution

The fourth proportional to 31,083.60, 42,878.52 and 18,505.92 is: 25,528.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,083.60 : 42,878.52 = 18,505.92 : x
  2. Step 2: Convert to fraction form
    31,083.60/42,878.52 = 18,505.92/x
  3. Step 3: Cross multiply
    31,083.60x = 42,878.52 × 18,505.92
  4. Step 4: Simplify right side
    31,083.60x = 793,506,460.84
  5. Step 5: Solve for x
    x = 793,506,460.84/31,083.60
  6. Step 6: Final answer
    x = 25,528.14

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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.