Home / 19,884.79-27,412.76-15,815.95

Finding the Fourth Proportional to 19,884.79, 27,412.76 and 15,815.95

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Solution

The fourth proportional to 19,884.79, 27,412.76 and 15,815.95 is: 21,803.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,884.79 : 27,412.76 = 15,815.95 : x
  2. Step 2: Convert to fraction form
    19,884.79/27,412.76 = 15,815.95/x
  3. Step 3: Cross multiply
    19,884.79x = 27,412.76 × 15,815.95
  4. Step 4: Simplify right side
    19,884.79x = 433,558,812.53
  5. Step 5: Solve for x
    x = 433,558,812.53/19,884.79
  6. Step 6: Final answer
    x = 21,803.54

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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.