Home / 28,601.04-39,471-15,855.73

Finding the Fourth Proportional to 28,601.04, 39,471 and 15,855.73

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Solution

The fourth proportional to 28,601.04, 39,471 and 15,855.73 is: 21,881.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,601.04 : 39,471 = 15,855.73 : x
  2. Step 2: Convert to fraction form
    28,601.04/39,471 = 15,855.73/x
  3. Step 3: Cross multiply
    28,601.04x = 39,471 × 15,855.73
  4. Step 4: Simplify right side
    28,601.04x = 625,841,518.83
  5. Step 5: Solve for x
    x = 625,841,518.83/28,601.04
  6. Step 6: Final answer
    x = 21,881.77

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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.