Home / 28,386.60-39,173.47-16,456.85

Finding the Fourth Proportional to 28,386.60, 39,173.47 and 16,456.85

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Solution

The fourth proportional to 28,386.60, 39,173.47 and 16,456.85 is: 22,710.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.60 : 39,173.47 = 16,456.85 : x
  2. Step 2: Convert to fraction form
    28,386.60/39,173.47 = 16,456.85/x
  3. Step 3: Cross multiply
    28,386.60x = 39,173.47 × 16,456.85
  4. Step 4: Simplify right side
    28,386.60x = 644,671,919.77
  5. Step 5: Solve for x
    x = 644,671,919.77/28,386.60
  6. Step 6: Final answer
    x = 22,710.43

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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.