Home / 28,687-39,590.08-16,111.76

Finding the Fourth Proportional to 28,687, 39,590.08 and 16,111.76

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Solution

The fourth proportional to 28,687, 39,590.08 and 16,111.76 is: 22,235.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,687 : 39,590.08 = 16,111.76 : x
  2. Step 2: Convert to fraction form
    28,687/39,590.08 = 16,111.76/x
  3. Step 3: Cross multiply
    28,687x = 39,590.08 × 16,111.76
  4. Step 4: Simplify right side
    28,687x = 637,865,867.34
  5. Step 5: Solve for x
    x = 637,865,867.34/28,687
  6. Step 6: Final answer
    x = 22,235.36

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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.