Home / 20,915.68-31,377.60-6,124.84

Finding the Fourth Proportional to 20,915.68, 31,377.60 and 6,124.84

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Solution

The fourth proportional to 20,915.68, 31,377.60 and 6,124.84 is: 9,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.68 : 31,377.60 = 6,124.84 : x
  2. Step 2: Convert to fraction form
    20,915.68/31,377.60 = 6,124.84/x
  3. Step 3: Cross multiply
    20,915.68x = 31,377.60 × 6,124.84
  4. Step 4: Simplify right side
    20,915.68x = 192,182,779.58
  5. Step 5: Solve for x
    x = 192,182,779.58/20,915.68
  6. Step 6: Final answer
    x = 9,188.45

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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.