Home / 21,805.13-32,665.48-12,777.46

Finding the Fourth Proportional to 21,805.13, 32,665.48 and 12,777.46

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Solution

The fourth proportional to 21,805.13, 32,665.48 and 12,777.46 is: 19,141.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,805.13 : 32,665.48 = 12,777.46 : x
  2. Step 2: Convert to fraction form
    21,805.13/32,665.48 = 12,777.46/x
  3. Step 3: Cross multiply
    21,805.13x = 32,665.48 × 12,777.46
  4. Step 4: Simplify right side
    21,805.13x = 417,381,864.08
  5. Step 5: Solve for x
    x = 417,381,864.08/21,805.13
  6. Step 6: Final answer
    x = 19,141.45

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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.