Home / 21,890.74-30,203.65-14,707.87

Finding the Fourth Proportional to 21,890.74, 30,203.65 and 14,707.87

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Solution

The fourth proportional to 21,890.74, 30,203.65 and 14,707.87 is: 20,293.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890.74 : 30,203.65 = 14,707.87 : x
  2. Step 2: Convert to fraction form
    21,890.74/30,203.65 = 14,707.87/x
  3. Step 3: Cross multiply
    21,890.74x = 30,203.65 × 14,707.87
  4. Step 4: Simplify right side
    21,890.74x = 444,231,357.73
  5. Step 5: Solve for x
    x = 444,231,357.73/21,890.74
  6. Step 6: Final answer
    x = 20,293.12

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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.