Home / 21,992.26-30,332.37-15,277.78

Finding the Fourth Proportional to 21,992.26, 30,332.37 and 15,277.78

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Solution

The fourth proportional to 21,992.26, 30,332.37 and 15,277.78 is: 21,071.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.26 : 30,332.37 = 15,277.78 : x
  2. Step 2: Convert to fraction form
    21,992.26/30,332.37 = 15,277.78/x
  3. Step 3: Cross multiply
    21,992.26x = 30,332.37 × 15,277.78
  4. Step 4: Simplify right side
    21,992.26x = 463,411,275.74
  5. Step 5: Solve for x
    x = 463,411,275.74/21,992.26
  6. Step 6: Final answer
    x = 21,071.56

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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.