Home / 39,225.06-54,130.68-21,320.03

Finding the Fourth Proportional to 39,225.06, 54,130.68 and 21,320.03

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Solution

The fourth proportional to 39,225.06, 54,130.68 and 21,320.03 is: 29,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,225.06 : 54,130.68 = 21,320.03 : x
  2. Step 2: Convert to fraction form
    39,225.06/54,130.68 = 21,320.03/x
  3. Step 3: Cross multiply
    39,225.06x = 54,130.68 × 21,320.03
  4. Step 4: Simplify right side
    39,225.06x = 1,154,067,856.85
  5. Step 5: Solve for x
    x = 1,154,067,856.85/39,225.06
  6. Step 6: Final answer
    x = 29,421.70

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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.