Home / 20,298.35-28,020.36-12,343.13

Finding the Fourth Proportional to 20,298.35, 28,020.36 and 12,343.13

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Solution

The fourth proportional to 20,298.35, 28,020.36 and 12,343.13 is: 17,038.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.35 : 28,020.36 = 12,343.13 : x
  2. Step 2: Convert to fraction form
    20,298.35/28,020.36 = 12,343.13/x
  3. Step 3: Cross multiply
    20,298.35x = 28,020.36 × 12,343.13
  4. Step 4: Simplify right side
    20,298.35x = 345,858,946.13
  5. Step 5: Solve for x
    x = 345,858,946.13/20,298.35
  6. Step 6: Final answer
    x = 17,038.77

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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.