Home / 30,200.80-45,279.60-13,547.20

Finding the Fourth Proportional to 30,200.80, 45,279.60 and 13,547.20

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Solution

The fourth proportional to 30,200.80, 45,279.60 and 13,547.20 is: 20,311.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,200.80 : 45,279.60 = 13,547.20 : x
  2. Step 2: Convert to fraction form
    30,200.80/45,279.60 = 13,547.20/x
  3. Step 3: Cross multiply
    30,200.80x = 45,279.60 × 13,547.20
  4. Step 4: Simplify right side
    30,200.80x = 613,411,797.12
  5. Step 5: Solve for x
    x = 613,411,797.12/30,200.80
  6. Step 6: Final answer
    x = 20,311.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.