Home / 28,446.16-42,668.80-12,647.04

Finding the Fourth Proportional to 28,446.16, 42,668.80 and 12,647.04

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Solution

The fourth proportional to 28,446.16, 42,668.80 and 12,647.04 is: 18,970.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.16 : 42,668.80 = 12,647.04 : x
  2. Step 2: Convert to fraction form
    28,446.16/42,668.80 = 12,647.04/x
  3. Step 3: Cross multiply
    28,446.16x = 42,668.80 × 12,647.04
  4. Step 4: Simplify right side
    28,446.16x = 539,633,988.73
  5. Step 5: Solve for x
    x = 539,633,988.73/28,446.16
  6. Step 6: Final answer
    x = 18,970.36

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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.