Home / 28,385.10-39,178.08-16,455.06

Finding the Fourth Proportional to 28,385.10, 39,178.08 and 16,455.06

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Solution

The fourth proportional to 28,385.10, 39,178.08 and 16,455.06 is: 22,711.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,385.10 : 39,178.08 = 16,455.06 : x
  2. Step 2: Convert to fraction form
    28,385.10/39,178.08 = 16,455.06/x
  3. Step 3: Cross multiply
    28,385.10x = 39,178.08 × 16,455.06
  4. Step 4: Simplify right side
    28,385.10x = 644,677,657.08
  5. Step 5: Solve for x
    x = 644,677,657.08/28,385.10
  6. Step 6: Final answer
    x = 22,711.83

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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.