Home / 21,113.12-31,675.08-6,321.98

Finding the Fourth Proportional to 21,113.12, 31,675.08 and 6,321.98

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Solution

The fourth proportional to 21,113.12, 31,675.08 and 6,321.98 is: 9,484.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.12 : 31,675.08 = 6,321.98 : x
  2. Step 2: Convert to fraction form
    21,113.12/31,675.08 = 6,321.98/x
  3. Step 3: Cross multiply
    21,113.12x = 31,675.08 × 6,321.98
  4. Step 4: Simplify right side
    21,113.12x = 200,249,222.26
  5. Step 5: Solve for x
    x = 200,249,222.26/21,113.12
  6. Step 6: Final answer
    x = 9,484.59

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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.