Home / 28,279.06-42,389.43-12,707.62

Finding the Fourth Proportional to 28,279.06, 42,389.43 and 12,707.62

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Solution

The fourth proportional to 28,279.06, 42,389.43 and 12,707.62 is: 19,048.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.06 : 42,389.43 = 12,707.62 : x
  2. Step 2: Convert to fraction form
    28,279.06/42,389.43 = 12,707.62/x
  3. Step 3: Cross multiply
    28,279.06x = 42,389.43 × 12,707.62
  4. Step 4: Simplify right side
    28,279.06x = 538,668,768.46
  5. Step 5: Solve for x
    x = 538,668,768.46/28,279.06
  6. Step 6: Final answer
    x = 19,048.33

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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.