Home / 30,572.36-42,154.32-28,680.91

Finding the Fourth Proportional to 30,572.36, 42,154.32 and 28,680.91

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Solution

The fourth proportional to 30,572.36, 42,154.32 and 28,680.91 is: 39,546.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,572.36 : 42,154.32 = 28,680.91 : x
  2. Step 2: Convert to fraction form
    30,572.36/42,154.32 = 28,680.91/x
  3. Step 3: Cross multiply
    30,572.36x = 42,154.32 × 28,680.91
  4. Step 4: Simplify right side
    30,572.36x = 1,209,024,258.03
  5. Step 5: Solve for x
    x = 1,209,024,258.03/30,572.36
  6. Step 6: Final answer
    x = 39,546.32

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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.