Home / 21,064.96-31,570.10-8,570.44

Finding the Fourth Proportional to 21,064.96, 31,570.10 and 8,570.44

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Solution

The fourth proportional to 21,064.96, 31,570.10 and 8,570.44 is: 12,844.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,064.96 : 31,570.10 = 8,570.44 : x
  2. Step 2: Convert to fraction form
    21,064.96/31,570.10 = 8,570.44/x
  3. Step 3: Cross multiply
    21,064.96x = 31,570.10 × 8,570.44
  4. Step 4: Simplify right side
    21,064.96x = 270,569,647.84
  5. Step 5: Solve for x
    x = 270,569,647.84/21,064.96
  6. Step 6: Final answer
    x = 12,844.54

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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.