Home / 14,587.12-21,885.36-5,220.78

Finding the Fourth Proportional to 14,587.12, 21,885.36 and 5,220.78

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Solution

The fourth proportional to 14,587.12, 21,885.36 and 5,220.78 is: 7,832.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,587.12 : 21,885.36 = 5,220.78 : x
  2. Step 2: Convert to fraction form
    14,587.12/21,885.36 = 5,220.78/x
  3. Step 3: Cross multiply
    14,587.12x = 21,885.36 × 5,220.78
  4. Step 4: Simplify right side
    14,587.12x = 114,258,649.78
  5. Step 5: Solve for x
    x = 114,258,649.78/14,587.12
  6. Step 6: Final answer
    x = 7,832.84

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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.