Home / 30,908.32-42,949.28-30,587.20

Finding the Fourth Proportional to 30,908.32, 42,949.28 and 30,587.20

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Solution

The fourth proportional to 30,908.32, 42,949.28 and 30,587.20 is: 42,503.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,908.32 : 42,949.28 = 30,587.20 : x
  2. Step 2: Convert to fraction form
    30,908.32/42,949.28 = 30,587.20/x
  3. Step 3: Cross multiply
    30,908.32x = 42,949.28 × 30,587.20
  4. Step 4: Simplify right side
    30,908.32x = 1,313,698,217.22
  5. Step 5: Solve for x
    x = 1,313,698,217.22/30,908.32
  6. Step 6: Final answer
    x = 42,503.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.