Home / 31,070.54-42,882.28-18,502.58

Finding the Fourth Proportional to 31,070.54, 42,882.28 and 18,502.58

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Solution

The fourth proportional to 31,070.54, 42,882.28 and 18,502.58 is: 25,536.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,070.54 : 42,882.28 = 18,502.58 : x
  2. Step 2: Convert to fraction form
    31,070.54/42,882.28 = 18,502.58/x
  3. Step 3: Cross multiply
    31,070.54x = 42,882.28 × 18,502.58
  4. Step 4: Simplify right side
    31,070.54x = 793,432,816.28
  5. Step 5: Solve for x
    x = 793,432,816.28/31,070.54
  6. Step 6: Final answer
    x = 25,536.50

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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.