Home / 39,223.02-54,128.13-21,318.07

Finding the Fourth Proportional to 39,223.02, 54,128.13 and 21,318.07

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Solution

The fourth proportional to 39,223.02, 54,128.13 and 21,318.07 is: 29,419.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,223.02 : 54,128.13 = 21,318.07 : x
  2. Step 2: Convert to fraction form
    39,223.02/54,128.13 = 21,318.07/x
  3. Step 3: Cross multiply
    39,223.02x = 54,128.13 × 21,318.07
  4. Step 4: Simplify right side
    39,223.02x = 1,153,907,264.31
  5. Step 5: Solve for x
    x = 1,153,907,264.31/39,223.02
  6. Step 6: Final answer
    x = 29,419.13

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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.