Home / 15,220.12-21,017.15-9,564.70

Finding the Fourth Proportional to 15,220.12, 21,017.15 and 9,564.70

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Solution

The fourth proportional to 15,220.12, 21,017.15 and 9,564.70 is: 13,207.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.12 : 21,017.15 = 9,564.70 : x
  2. Step 2: Convert to fraction form
    15,220.12/21,017.15 = 9,564.70/x
  3. Step 3: Cross multiply
    15,220.12x = 21,017.15 × 9,564.70
  4. Step 4: Simplify right side
    15,220.12x = 201,022,686.78
  5. Step 5: Solve for x
    x = 201,022,686.78/15,220.12
  6. Step 6: Final answer
    x = 13,207.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.