Home / 21,777.78-32,666.70-14,428.92

Finding the Fourth Proportional to 21,777.78, 32,666.70 and 14,428.92

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Solution

The fourth proportional to 21,777.78, 32,666.70 and 14,428.92 is: 21,643.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.78 : 32,666.70 = 14,428.92 : x
  2. Step 2: Convert to fraction form
    21,777.78/32,666.70 = 14,428.92/x
  3. Step 3: Cross multiply
    21,777.78x = 32,666.70 × 14,428.92
  4. Step 4: Simplify right side
    21,777.78x = 471,345,200.96
  5. Step 5: Solve for x
    x = 471,345,200.96/21,777.78
  6. Step 6: Final answer
    x = 21,643.40

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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.