Home / 20,256.75-30,398.63-7,787.07

Finding the Fourth Proportional to 20,256.75, 30,398.63 and 7,787.07

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Solution

The fourth proportional to 20,256.75, 30,398.63 and 7,787.07 is: 11,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,256.75 : 30,398.63 = 7,787.07 : x
  2. Step 2: Convert to fraction form
    20,256.75/30,398.63 = 7,787.07/x
  3. Step 3: Cross multiply
    20,256.75x = 30,398.63 × 7,787.07
  4. Step 4: Simplify right side
    20,256.75x = 236,716,259.71
  5. Step 5: Solve for x
    x = 236,716,259.71/20,256.75
  6. Step 6: Final answer
    x = 11,685.80

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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.