Home / 39,041.79-53,878.10-21,137.18

Finding the Fourth Proportional to 39,041.79, 53,878.10 and 21,137.18

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Solution

The fourth proportional to 39,041.79, 53,878.10 and 21,137.18 is: 29,169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,041.79 : 53,878.10 = 21,137.18 : x
  2. Step 2: Convert to fraction form
    39,041.79/53,878.10 = 21,137.18/x
  3. Step 3: Cross multiply
    39,041.79x = 53,878.10 × 21,137.18
  4. Step 4: Simplify right side
    39,041.79x = 1,138,830,722.68
  5. Step 5: Solve for x
    x = 1,138,830,722.68/39,041.79
  6. Step 6: Final answer
    x = 29,169.53

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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.