Home / 21,831.90-32,787.45-19,110.30

Finding the Fourth Proportional to 21,831.90, 32,787.45 and 19,110.30

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Solution

The fourth proportional to 21,831.90, 32,787.45 and 19,110.30 is: 28,700.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.90 : 32,787.45 = 19,110.30 : x
  2. Step 2: Convert to fraction form
    21,831.90/32,787.45 = 19,110.30/x
  3. Step 3: Cross multiply
    21,831.90x = 32,787.45 × 19,110.30
  4. Step 4: Simplify right side
    21,831.90x = 626,578,005.74
  5. Step 5: Solve for x
    x = 626,578,005.74/21,831.90
  6. Step 6: Final answer
    x = 28,700.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.