Home / 39,225.65-54,131.76-21,320.70

Finding the Fourth Proportional to 39,225.65, 54,131.76 and 21,320.70

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Solution

The fourth proportional to 39,225.65, 54,131.76 and 21,320.70 is: 29,422.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,225.65 : 54,131.76 = 21,320.70 : x
  2. Step 2: Convert to fraction form
    39,225.65/54,131.76 = 21,320.70/x
  3. Step 3: Cross multiply
    39,225.65x = 54,131.76 × 21,320.70
  4. Step 4: Simplify right side
    39,225.65x = 1,154,127,015.43
  5. Step 5: Solve for x
    x = 1,154,127,015.43/39,225.65
  6. Step 6: Final answer
    x = 29,422.77

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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.