Home / 30,276.15-45,421.14-9,219.18

Finding the Fourth Proportional to 30,276.15, 45,421.14 and 9,219.18

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Solution

The fourth proportional to 30,276.15, 45,421.14 and 9,219.18 is: 13,830.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,276.15 : 45,421.14 = 9,219.18 : x
  2. Step 2: Convert to fraction form
    30,276.15/45,421.14 = 9,219.18/x
  3. Step 3: Cross multiply
    30,276.15x = 45,421.14 × 9,219.18
  4. Step 4: Simplify right side
    30,276.15x = 418,745,665.47
  5. Step 5: Solve for x
    x = 418,745,665.47/30,276.15
  6. Step 6: Final answer
    x = 13,830.88

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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.