Home / 15,225.15-21,010.23-8,852.25

Finding the Fourth Proportional to 15,225.15, 21,010.23 and 8,852.25

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Solution

The fourth proportional to 15,225.15, 21,010.23 and 8,852.25 is: 12,215.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,225.15 : 21,010.23 = 8,852.25 : x
  2. Step 2: Convert to fraction form
    15,225.15/21,010.23 = 8,852.25/x
  3. Step 3: Cross multiply
    15,225.15x = 21,010.23 × 8,852.25
  4. Step 4: Simplify right side
    15,225.15x = 185,987,808.52
  5. Step 5: Solve for x
    x = 185,987,808.52/15,225.15
  6. Step 6: Final answer
    x = 12,215.83

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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.