Home / 10,221.80-15,332.70-5,556.20

Finding the Fourth Proportional to 10,221.80, 15,332.70 and 5,556.20

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Solution

The fourth proportional to 10,221.80, 15,332.70 and 5,556.20 is: 8,334.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.80 : 15,332.70 = 5,556.20 : x
  2. Step 2: Convert to fraction form
    10,221.80/15,332.70 = 5,556.20/x
  3. Step 3: Cross multiply
    10,221.80x = 15,332.70 × 5,556.20
  4. Step 4: Simplify right side
    10,221.80x = 85,191,547.74
  5. Step 5: Solve for x
    x = 85,191,547.74/10,221.80
  6. Step 6: Final answer
    x = 8,334.30

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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.