Home / 20,362.48-28,117.34-15,317.96

Finding the Fourth Proportional to 20,362.48, 28,117.34 and 15,317.96

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Solution

The fourth proportional to 20,362.48, 28,117.34 and 15,317.96 is: 21,151.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.48 : 28,117.34 = 15,317.96 : x
  2. Step 2: Convert to fraction form
    20,362.48/28,117.34 = 15,317.96/x
  3. Step 3: Cross multiply
    20,362.48x = 28,117.34 × 15,317.96
  4. Step 4: Simplify right side
    20,362.48x = 430,700,235.13
  5. Step 5: Solve for x
    x = 430,700,235.13/20,362.48
  6. Step 6: Final answer
    x = 21,151.66

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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.