Home / 21,788.79-32,670.01-9,778.77

Finding the Fourth Proportional to 21,788.79, 32,670.01 and 9,778.77

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Solution

The fourth proportional to 21,788.79, 32,670.01 and 9,778.77 is: 14,662.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,788.79 : 32,670.01 = 9,778.77 : x
  2. Step 2: Convert to fraction form
    21,788.79/32,670.01 = 9,778.77/x
  3. Step 3: Cross multiply
    21,788.79x = 32,670.01 × 9,778.77
  4. Step 4: Simplify right side
    21,788.79x = 319,472,513.69
  5. Step 5: Solve for x
    x = 319,472,513.69/21,788.79
  6. Step 6: Final answer
    x = 14,662.24

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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.