Home / 30,079.20-45,110.04-9,018.40

Finding the Fourth Proportional to 30,079.20, 45,110.04 and 9,018.40

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Solution

The fourth proportional to 30,079.20, 45,110.04 and 9,018.40 is: 13,524.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,079.20 : 45,110.04 = 9,018.40 : x
  2. Step 2: Convert to fraction form
    30,079.20/45,110.04 = 9,018.40/x
  3. Step 3: Cross multiply
    30,079.20x = 45,110.04 × 9,018.40
  4. Step 4: Simplify right side
    30,079.20x = 406,820,384.74
  5. Step 5: Solve for x
    x = 406,820,384.74/30,079.20
  6. Step 6: Final answer
    x = 13,524.97

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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.