Home / 15,821.54-21,831.81-8,748.08

Finding the Fourth Proportional to 15,821.54, 21,831.81 and 8,748.08

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Solution

The fourth proportional to 15,821.54, 21,831.81 and 8,748.08 is: 12,071.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.54 : 21,831.81 = 8,748.08 : x
  2. Step 2: Convert to fraction form
    15,821.54/21,831.81 = 8,748.08/x
  3. Step 3: Cross multiply
    15,821.54x = 21,831.81 × 8,748.08
  4. Step 4: Simplify right side
    15,821.54x = 190,986,420.42
  5. Step 5: Solve for x
    x = 190,986,420.42/15,821.54
  6. Step 6: Final answer
    x = 12,071.29

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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.