Home / 20,923.72-31,386.66-5,341.48

Finding the Fourth Proportional to 20,923.72, 31,386.66 and 5,341.48

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Solution

The fourth proportional to 20,923.72, 31,386.66 and 5,341.48 is: 8,012.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.72 : 31,386.66 = 5,341.48 : x
  2. Step 2: Convert to fraction form
    20,923.72/31,386.66 = 5,341.48/x
  3. Step 3: Cross multiply
    20,923.72x = 31,386.66 × 5,341.48
  4. Step 4: Simplify right side
    20,923.72x = 167,651,216.66
  5. Step 5: Solve for x
    x = 167,651,216.66/20,923.72
  6. Step 6: Final answer
    x = 8,012.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.