Home / 20,359.81-30,377.84-17,866.63

Finding the Fourth Proportional to 20,359.81, 30,377.84 and 17,866.63

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Solution

The fourth proportional to 20,359.81, 30,377.84 and 17,866.63 is: 26,657.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.81 : 30,377.84 = 17,866.63 : x
  2. Step 2: Convert to fraction form
    20,359.81/30,377.84 = 17,866.63/x
  3. Step 3: Cross multiply
    20,359.81x = 30,377.84 × 17,866.63
  4. Step 4: Simplify right side
    20,359.81x = 542,749,627.48
  5. Step 5: Solve for x
    x = 542,749,627.48/20,359.81
  6. Step 6: Final answer
    x = 26,657.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.