Home / 28,487.59-39,320.53-16,389.45

Finding the Fourth Proportional to 28,487.59, 39,320.53 and 16,389.45

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Solution

The fourth proportional to 28,487.59, 39,320.53 and 16,389.45 is: 22,621.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.59 : 39,320.53 = 16,389.45 : x
  2. Step 2: Convert to fraction form
    28,487.59/39,320.53 = 16,389.45/x
  3. Step 3: Cross multiply
    28,487.59x = 39,320.53 × 16,389.45
  4. Step 4: Simplify right side
    28,487.59x = 644,441,778.46
  5. Step 5: Solve for x
    x = 644,441,778.46/28,487.59
  6. Step 6: Final answer
    x = 22,621.85

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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.