Home / 30,218.13-41,657.71-21,237.76

Finding the Fourth Proportional to 30,218.13, 41,657.71 and 21,237.76

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Solution

The fourth proportional to 30,218.13, 41,657.71 and 21,237.76 is: 29,277.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,218.13 : 41,657.71 = 21,237.76 : x
  2. Step 2: Convert to fraction form
    30,218.13/41,657.71 = 21,237.76/x
  3. Step 3: Cross multiply
    30,218.13x = 41,657.71 × 21,237.76
  4. Step 4: Simplify right side
    30,218.13x = 884,716,132.65
  5. Step 5: Solve for x
    x = 884,716,132.65/30,218.13
  6. Step 6: Final answer
    x = 29,277.66

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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.