Home / 15,831.95-21,848.40-8,758.62

Finding the Fourth Proportional to 15,831.95, 21,848.40 and 8,758.62

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Solution

The fourth proportional to 15,831.95, 21,848.40 and 8,758.62 is: 12,087.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.95 : 21,848.40 = 8,758.62 : x
  2. Step 2: Convert to fraction form
    15,831.95/21,848.40 = 8,758.62/x
  3. Step 3: Cross multiply
    15,831.95x = 21,848.40 × 8,758.62
  4. Step 4: Simplify right side
    15,831.95x = 191,361,833.21
  5. Step 5: Solve for x
    x = 191,361,833.21/15,831.95
  6. Step 6: Final answer
    x = 12,087.07

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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.