Home / 21,740.16-30,008.54-12,787.22

Finding the Fourth Proportional to 21,740.16, 30,008.54 and 12,787.22

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Solution

The fourth proportional to 21,740.16, 30,008.54 and 12,787.22 is: 17,650.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,740.16 : 30,008.54 = 12,787.22 : x
  2. Step 2: Convert to fraction form
    21,740.16/30,008.54 = 12,787.22/x
  3. Step 3: Cross multiply
    21,740.16x = 30,008.54 × 12,787.22
  4. Step 4: Simplify right side
    21,740.16x = 383,725,802.86
  5. Step 5: Solve for x
    x = 383,725,802.86/21,740.16
  6. Step 6: Final answer
    x = 17,650.55

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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.