Home / 21,963.76-30,323.77-16,918.47

Finding the Fourth Proportional to 21,963.76, 30,323.77 and 16,918.47

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Solution

The fourth proportional to 21,963.76, 30,323.77 and 16,918.47 is: 23,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,963.76 : 30,323.77 = 16,918.47 : x
  2. Step 2: Convert to fraction form
    21,963.76/30,323.77 = 16,918.47/x
  3. Step 3: Cross multiply
    21,963.76x = 30,323.77 × 16,918.47
  4. Step 4: Simplify right side
    21,963.76x = 513,031,750.74
  5. Step 5: Solve for x
    x = 513,031,750.74/21,963.76
  6. Step 6: Final answer
    x = 23,358.10

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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.