Home / 21,881.48-30,143.76-17,403.80

Finding the Fourth Proportional to 21,881.48, 30,143.76 and 17,403.80

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Solution

The fourth proportional to 21,881.48, 30,143.76 and 17,403.80 is: 23,975.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,881.48 : 30,143.76 = 17,403.80 : x
  2. Step 2: Convert to fraction form
    21,881.48/30,143.76 = 17,403.80/x
  3. Step 3: Cross multiply
    21,881.48x = 30,143.76 × 17,403.80
  4. Step 4: Simplify right side
    21,881.48x = 524,615,970.29
  5. Step 5: Solve for x
    x = 524,615,970.29/21,881.48
  6. Step 6: Final answer
    x = 23,975.34

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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.