Home / 20,293.30-28,002.70-13,925.36

Finding the Fourth Proportional to 20,293.30, 28,002.70 and 13,925.36

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Solution

The fourth proportional to 20,293.30, 28,002.70 and 13,925.36 is: 19,215.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.30 : 28,002.70 = 13,925.36 : x
  2. Step 2: Convert to fraction form
    20,293.30/28,002.70 = 13,925.36/x
  3. Step 3: Cross multiply
    20,293.30x = 28,002.70 × 13,925.36
  4. Step 4: Simplify right side
    20,293.30x = 389,947,678.47
  5. Step 5: Solve for x
    x = 389,947,678.47/20,293.30
  6. Step 6: Final answer
    x = 19,215.59

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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.