Home / 30,632.79-42,277.17-18,693.60

Finding the Fourth Proportional to 30,632.79, 42,277.17 and 18,693.60

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Solution

The fourth proportional to 30,632.79, 42,277.17 and 18,693.60 is: 25,799.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,632.79 : 42,277.17 = 18,693.60 : x
  2. Step 2: Convert to fraction form
    30,632.79/42,277.17 = 18,693.60/x
  3. Step 3: Cross multiply
    30,632.79x = 42,277.17 × 18,693.60
  4. Step 4: Simplify right side
    30,632.79x = 790,312,505.11
  5. Step 5: Solve for x
    x = 790,312,505.11/30,632.79
  6. Step 6: Final answer
    x = 25,799.56

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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.