Home / 39,888.48-55,044.16-21,983.04

Finding the Fourth Proportional to 39,888.48, 55,044.16 and 21,983.04

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Solution

The fourth proportional to 39,888.48, 55,044.16 and 21,983.04 is: 30,335.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.48 : 55,044.16 = 21,983.04 : x
  2. Step 2: Convert to fraction form
    39,888.48/55,044.16 = 21,983.04/x
  3. Step 3: Cross multiply
    39,888.48x = 55,044.16 × 21,983.04
  4. Step 4: Simplify right side
    39,888.48x = 1,210,037,971.05
  5. Step 5: Solve for x
    x = 1,210,037,971.05/39,888.48
  6. Step 6: Final answer
    x = 30,335.52

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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.