Home / 21,536.69-29,718.61-19,949.74

Finding the Fourth Proportional to 21,536.69, 29,718.61 and 19,949.74

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Solution

The fourth proportional to 21,536.69, 29,718.61 and 19,949.74 is: 27,528.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,536.69 : 29,718.61 = 19,949.74 : x
  2. Step 2: Convert to fraction form
    21,536.69/29,718.61 = 19,949.74/x
  3. Step 3: Cross multiply
    21,536.69x = 29,718.61 × 19,949.74
  4. Step 4: Simplify right side
    21,536.69x = 592,878,418.49
  5. Step 5: Solve for x
    x = 592,878,418.49/21,536.69
  6. Step 6: Final answer
    x = 27,528.77

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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.