Home / 28,823.12-39,775.94-15,575.12

Finding the Fourth Proportional to 28,823.12, 39,775.94 and 15,575.12

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Solution

The fourth proportional to 28,823.12, 39,775.94 and 15,575.12 is: 21,493.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,823.12 : 39,775.94 = 15,575.12 : x
  2. Step 2: Convert to fraction form
    28,823.12/39,775.94 = 15,575.12/x
  3. Step 3: Cross multiply
    28,823.12x = 39,775.94 × 15,575.12
  4. Step 4: Simplify right side
    28,823.12x = 619,515,038.61
  5. Step 5: Solve for x
    x = 619,515,038.61/28,823.12
  6. Step 6: Final answer
    x = 21,493.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.