Home / 21,035.71-31,565.63-8,553.43

Finding the Fourth Proportional to 21,035.71, 31,565.63 and 8,553.43

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Solution

The fourth proportional to 21,035.71, 31,565.63 and 8,553.43 is: 12,835.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.71 : 31,565.63 = 8,553.43 : x
  2. Step 2: Convert to fraction form
    21,035.71/31,565.63 = 8,553.43/x
  3. Step 3: Cross multiply
    21,035.71x = 31,565.63 × 8,553.43
  4. Step 4: Simplify right side
    21,035.71x = 269,994,406.61
  5. Step 5: Solve for x
    x = 269,994,406.61/21,035.71
  6. Step 6: Final answer
    x = 12,835.05

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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.