Home / 30,031.50-45,047.88-9,255

Finding the Fourth Proportional to 30,031.50, 45,047.88 and 9,255

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Solution

The fourth proportional to 30,031.50, 45,047.88 and 9,255 is: 13,882.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,031.50 : 45,047.88 = 9,255 : x
  2. Step 2: Convert to fraction form
    30,031.50/45,047.88 = 9,255/x
  3. Step 3: Cross multiply
    30,031.50x = 45,047.88 × 9,255
  4. Step 4: Simplify right side
    30,031.50x = 416,918,129.40
  5. Step 5: Solve for x
    x = 416,918,129.40/30,031.50
  6. Step 6: Final answer
    x = 13,882.69

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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.