Home / 15,725.30-21,701.10-9,011.20

Finding the Fourth Proportional to 15,725.30, 21,701.10 and 9,011.20

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Solution

The fourth proportional to 15,725.30, 21,701.10 and 9,011.20 is: 12,435.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.30 : 21,701.10 = 9,011.20 : x
  2. Step 2: Convert to fraction form
    15,725.30/21,701.10 = 9,011.20/x
  3. Step 3: Cross multiply
    15,725.30x = 21,701.10 × 9,011.20
  4. Step 4: Simplify right side
    15,725.30x = 195,552,952.32
  5. Step 5: Solve for x
    x = 195,552,952.32/15,725.30
  6. Step 6: Final answer
    x = 12,435.56

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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.