Home / 21,184.40-31,779.30-8,040.53

Finding the Fourth Proportional to 21,184.40, 31,779.30 and 8,040.53

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Solution

The fourth proportional to 21,184.40, 31,779.30 and 8,040.53 is: 12,061.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.40 : 31,779.30 = 8,040.53 : x
  2. Step 2: Convert to fraction form
    21,184.40/31,779.30 = 8,040.53/x
  3. Step 3: Cross multiply
    21,184.40x = 31,779.30 × 8,040.53
  4. Step 4: Simplify right side
    21,184.40x = 255,522,415.03
  5. Step 5: Solve for x
    x = 255,522,415.03/21,184.40
  6. Step 6: Final answer
    x = 12,061.82

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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.