Home / 21,455.66-32,188.13-8,805.45

Finding the Fourth Proportional to 21,455.66, 32,188.13 and 8,805.45

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Solution

The fourth proportional to 21,455.66, 32,188.13 and 8,805.45 is: 13,210.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.66 : 32,188.13 = 8,805.45 : x
  2. Step 2: Convert to fraction form
    21,455.66/32,188.13 = 8,805.45/x
  3. Step 3: Cross multiply
    21,455.66x = 32,188.13 × 8,805.45
  4. Step 4: Simplify right side
    21,455.66x = 283,430,991.32
  5. Step 5: Solve for x
    x = 283,430,991.32/21,455.66
  6. Step 6: Final answer
    x = 13,210.08

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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.