Home / 28,603.47-39,429.03-20,081.69

Finding the Fourth Proportional to 28,603.47, 39,429.03 and 20,081.69

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Solution

The fourth proportional to 28,603.47, 39,429.03 and 20,081.69 is: 27,682.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.47 : 39,429.03 = 20,081.69 : x
  2. Step 2: Convert to fraction form
    28,603.47/39,429.03 = 20,081.69/x
  3. Step 3: Cross multiply
    28,603.47x = 39,429.03 × 20,081.69
  4. Step 4: Simplify right side
    28,603.47x = 791,801,557.46
  5. Step 5: Solve for x
    x = 791,801,557.46/28,603.47
  6. Step 6: Final answer
    x = 27,682.01

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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.