Home / 15,823.71-21,831.78-10,519.42

Finding the Fourth Proportional to 15,823.71, 21,831.78 and 10,519.42

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Solution

The fourth proportional to 15,823.71, 21,831.78 and 10,519.42 is: 14,513.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,823.71 : 21,831.78 = 10,519.42 : x
  2. Step 2: Convert to fraction form
    15,823.71/21,831.78 = 10,519.42/x
  3. Step 3: Cross multiply
    15,823.71x = 21,831.78 × 10,519.42
  4. Step 4: Simplify right side
    15,823.71x = 229,657,663.17
  5. Step 5: Solve for x
    x = 229,657,663.17/15,823.71
  6. Step 6: Final answer
    x = 14,513.52

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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.