Home / 28,460.22-39,276.81-15,885.78

Finding the Fourth Proportional to 28,460.22, 39,276.81 and 15,885.78

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Solution

The fourth proportional to 28,460.22, 39,276.81 and 15,885.78 is: 21,923.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,460.22 : 39,276.81 = 15,885.78 : x
  2. Step 2: Convert to fraction form
    28,460.22/39,276.81 = 15,885.78/x
  3. Step 3: Cross multiply
    28,460.22x = 39,276.81 × 15,885.78
  4. Step 4: Simplify right side
    28,460.22x = 623,942,762.76
  5. Step 5: Solve for x
    x = 623,942,762.76/28,460.22
  6. Step 6: Final answer
    x = 21,923.33

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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.