Home / 39,768.04-54,878.50-21,862.92

Finding the Fourth Proportional to 39,768.04, 54,878.50 and 21,862.92

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Solution

The fourth proportional to 39,768.04, 54,878.50 and 21,862.92 is: 30,170.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,768.04 : 54,878.50 = 21,862.92 : x
  2. Step 2: Convert to fraction form
    39,768.04/54,878.50 = 21,862.92/x
  3. Step 3: Cross multiply
    39,768.04x = 54,878.50 × 21,862.92
  4. Step 4: Simplify right side
    39,768.04x = 1,199,803,994.77
  5. Step 5: Solve for x
    x = 1,199,803,994.77/39,768.04
  6. Step 6: Final answer
    x = 30,170.06

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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.