Home / 28,408.50-39,205.95-15,663.94

Finding the Fourth Proportional to 28,408.50, 39,205.95 and 15,663.94

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Solution

The fourth proportional to 28,408.50, 39,205.95 and 15,663.94 is: 21,617.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.50 : 39,205.95 = 15,663.94 : x
  2. Step 2: Convert to fraction form
    28,408.50/39,205.95 = 15,663.94/x
  3. Step 3: Cross multiply
    28,408.50x = 39,205.95 × 15,663.94
  4. Step 4: Simplify right side
    28,408.50x = 614,119,648.44
  5. Step 5: Solve for x
    x = 614,119,648.44/28,408.50
  6. Step 6: Final answer
    x = 21,617.46

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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.