Home / 28,830.15-43,247.04-12,187.08

Finding the Fourth Proportional to 28,830.15, 43,247.04 and 12,187.08

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Solution

The fourth proportional to 28,830.15, 43,247.04 and 12,187.08 is: 18,281.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,830.15 : 43,247.04 = 12,187.08 : x
  2. Step 2: Convert to fraction form
    28,830.15/43,247.04 = 12,187.08/x
  3. Step 3: Cross multiply
    28,830.15x = 43,247.04 × 12,187.08
  4. Step 4: Simplify right side
    28,830.15x = 527,054,920.01
  5. Step 5: Solve for x
    x = 527,054,920.01/28,830.15
  6. Step 6: Final answer
    x = 18,281.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.