Home / 39,518.31-54,534.16-21,612.94

Finding the Fourth Proportional to 39,518.31, 54,534.16 and 21,612.94

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Solution

The fourth proportional to 39,518.31, 54,534.16 and 21,612.94 is: 29,825.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,518.31 : 54,534.16 = 21,612.94 : x
  2. Step 2: Convert to fraction form
    39,518.31/54,534.16 = 21,612.94/x
  3. Step 3: Cross multiply
    39,518.31x = 54,534.16 × 21,612.94
  4. Step 4: Simplify right side
    39,518.31x = 1,178,643,418.71
  5. Step 5: Solve for x
    x = 1,178,643,418.71/39,518.31
  6. Step 6: Final answer
    x = 29,825.25

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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.