Home / 15,922.40-21,966.57-9,206.78

Finding the Fourth Proportional to 15,922.40, 21,966.57 and 9,206.78

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Solution

The fourth proportional to 15,922.40, 21,966.57 and 9,206.78 is: 12,701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,922.40 : 21,966.57 = 9,206.78 : x
  2. Step 2: Convert to fraction form
    15,922.40/21,966.57 = 9,206.78/x
  3. Step 3: Cross multiply
    15,922.40x = 21,966.57 × 9,206.78
  4. Step 4: Simplify right side
    15,922.40x = 202,241,267.51
  5. Step 5: Solve for x
    x = 202,241,267.51/15,922.40
  6. Step 6: Final answer
    x = 12,701.69

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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.