Home / 20,848.70-28,769.38-12,349.32

Finding the Fourth Proportional to 20,848.70, 28,769.38 and 12,349.32

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Solution

The fourth proportional to 20,848.70, 28,769.38 and 12,349.32 is: 17,040.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.70 : 28,769.38 = 12,349.32 : x
  2. Step 2: Convert to fraction form
    20,848.70/28,769.38 = 12,349.32/x
  3. Step 3: Cross multiply
    20,848.70x = 28,769.38 × 12,349.32
  4. Step 4: Simplify right side
    20,848.70x = 355,282,279.82
  5. Step 5: Solve for x
    x = 355,282,279.82/20,848.70
  6. Step 6: Final answer
    x = 17,040.98

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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.