Home / 20,220.03-30,338.55-9,695.70

Finding the Fourth Proportional to 20,220.03, 30,338.55 and 9,695.70

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Solution

The fourth proportional to 20,220.03, 30,338.55 and 9,695.70 is: 14,547.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.03 : 30,338.55 = 9,695.70 : x
  2. Step 2: Convert to fraction form
    20,220.03/30,338.55 = 9,695.70/x
  3. Step 3: Cross multiply
    20,220.03x = 30,338.55 × 9,695.70
  4. Step 4: Simplify right side
    20,220.03x = 294,153,479.24
  5. Step 5: Solve for x
    x = 294,153,479.24/20,220.03
  6. Step 6: Final answer
    x = 14,547.63

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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.