Home / 15,873.28-21,881.28-10,556.80

Finding the Fourth Proportional to 15,873.28, 21,881.28 and 10,556.80

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Solution

The fourth proportional to 15,873.28, 21,881.28 and 10,556.80 is: 14,552.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.28 : 21,881.28 = 10,556.80 : x
  2. Step 2: Convert to fraction form
    15,873.28/21,881.28 = 10,556.80/x
  3. Step 3: Cross multiply
    15,873.28x = 21,881.28 × 10,556.80
  4. Step 4: Simplify right side
    15,873.28x = 230,996,296.70
  5. Step 5: Solve for x
    x = 230,996,296.70/15,873.28
  6. Step 6: Final answer
    x = 14,552.52

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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.