Home / 28,686.75-39,587.73-16,111.50

Finding the Fourth Proportional to 28,686.75, 39,587.73 and 16,111.50

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Solution

The fourth proportional to 28,686.75, 39,587.73 and 16,111.50 is: 22,233.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.75 : 39,587.73 = 16,111.50 : x
  2. Step 2: Convert to fraction form
    28,686.75/39,587.73 = 16,111.50/x
  3. Step 3: Cross multiply
    28,686.75x = 39,587.73 × 16,111.50
  4. Step 4: Simplify right side
    28,686.75x = 637,817,711.90
  5. Step 5: Solve for x
    x = 637,817,711.90/28,686.75
  6. Step 6: Final answer
    x = 22,233.88

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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.