Home / 21,266.51-31,911.50-8,783.63

Finding the Fourth Proportional to 21,266.51, 31,911.50 and 8,783.63

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Solution

The fourth proportional to 21,266.51, 31,911.50 and 8,783.63 is: 13,180.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266.51 : 31,911.50 = 8,783.63 : x
  2. Step 2: Convert to fraction form
    21,266.51/31,911.50 = 8,783.63/x
  3. Step 3: Cross multiply
    21,266.51x = 31,911.50 × 8,783.63
  4. Step 4: Simplify right side
    21,266.51x = 280,298,671.15
  5. Step 5: Solve for x
    x = 280,298,671.15/21,266.51
  6. Step 6: Final answer
    x = 13,180.29

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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.