Home / 20,967.78-28,935.59-11,536.95

Finding the Fourth Proportional to 20,967.78, 28,935.59 and 11,536.95

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Solution

The fourth proportional to 20,967.78, 28,935.59 and 11,536.95 is: 15,921.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.78 : 28,935.59 = 11,536.95 : x
  2. Step 2: Convert to fraction form
    20,967.78/28,935.59 = 11,536.95/x
  3. Step 3: Cross multiply
    20,967.78x = 28,935.59 × 11,536.95
  4. Step 4: Simplify right side
    20,967.78x = 333,828,397.37
  5. Step 5: Solve for x
    x = 333,828,397.37/20,967.78
  6. Step 6: Final answer
    x = 15,921.02

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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.