Home / 21,455.36-32,182.56-9,771.68

Finding the Fourth Proportional to 21,455.36, 32,182.56 and 9,771.68

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Solution

The fourth proportional to 21,455.36, 32,182.56 and 9,771.68 is: 14,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455.36 : 32,182.56 = 9,771.68 : x
  2. Step 2: Convert to fraction form
    21,455.36/32,182.56 = 9,771.68/x
  3. Step 3: Cross multiply
    21,455.36x = 32,182.56 × 9,771.68
  4. Step 4: Simplify right side
    21,455.36x = 314,477,677.90
  5. Step 5: Solve for x
    x = 314,477,677.90/21,455.36
  6. Step 6: Final answer
    x = 14,657.30

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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.