Home / 29,420.09-40,588.38-21,781.52

Finding the Fourth Proportional to 29,420.09, 40,588.38 and 21,781.52

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Solution

The fourth proportional to 29,420.09, 40,588.38 and 21,781.52 is: 30,050.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,420.09 : 40,588.38 = 21,781.52 : x
  2. Step 2: Convert to fraction form
    29,420.09/40,588.38 = 21,781.52/x
  3. Step 3: Cross multiply
    29,420.09x = 40,588.38 × 21,781.52
  4. Step 4: Simplify right side
    29,420.09x = 884,076,610.74
  5. Step 5: Solve for x
    x = 884,076,610.74/29,420.09
  6. Step 6: Final answer
    x = 30,050.10

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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.