Home / 30,935.52-42,710.49-20,343.15

Finding the Fourth Proportional to 30,935.52, 42,710.49 and 20,343.15

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Solution

The fourth proportional to 30,935.52, 42,710.49 and 20,343.15 is: 28,086.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.52 : 42,710.49 = 20,343.15 : x
  2. Step 2: Convert to fraction form
    30,935.52/42,710.49 = 20,343.15/x
  3. Step 3: Cross multiply
    30,935.52x = 42,710.49 × 20,343.15
  4. Step 4: Simplify right side
    30,935.52x = 868,865,904.64
  5. Step 5: Solve for x
    x = 868,865,904.64/30,935.52
  6. Step 6: Final answer
    x = 28,086.35

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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.