Home / 30,436.88-42,002.10-17,007.68

Finding the Fourth Proportional to 30,436.88, 42,002.10 and 17,007.68

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Solution

The fourth proportional to 30,436.88, 42,002.10 and 17,007.68 is: 23,470.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,436.88 : 42,002.10 = 17,007.68 : x
  2. Step 2: Convert to fraction form
    30,436.88/42,002.10 = 17,007.68/x
  3. Step 3: Cross multiply
    30,436.88x = 42,002.10 × 17,007.68
  4. Step 4: Simplify right side
    30,436.88x = 714,358,276.13
  5. Step 5: Solve for x
    x = 714,358,276.13/30,436.88
  6. Step 6: Final answer
    x = 23,470.15

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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.