Home / 39,225.21-54,131.29-21,320.21

Finding the Fourth Proportional to 39,225.21, 54,131.29 and 21,320.21

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Solution

The fourth proportional to 39,225.21, 54,131.29 and 21,320.21 is: 29,422.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,225.21 : 54,131.29 = 21,320.21 : x
  2. Step 2: Convert to fraction form
    39,225.21/54,131.29 = 21,320.21/x
  3. Step 3: Cross multiply
    39,225.21x = 54,131.29 × 21,320.21
  4. Step 4: Simplify right side
    39,225.21x = 1,154,090,552.40
  5. Step 5: Solve for x
    x = 1,154,090,552.40/39,225.21
  6. Step 6: Final answer
    x = 29,422.16

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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.