Home / 30,178.07-45,275.27-9,118.79

Finding the Fourth Proportional to 30,178.07, 45,275.27 and 9,118.79

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Solution

The fourth proportional to 30,178.07, 45,275.27 and 9,118.79 is: 13,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,178.07 : 45,275.27 = 9,118.79 : x
  2. Step 2: Convert to fraction form
    30,178.07/45,275.27 = 9,118.79/x
  3. Step 3: Cross multiply
    30,178.07x = 45,275.27 × 9,118.79
  4. Step 4: Simplify right side
    30,178.07x = 412,855,407.35
  5. Step 5: Solve for x
    x = 412,855,407.35/30,178.07
  6. Step 6: Final answer
    x = 13,680.65

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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.