Home / 28,459.62-39,272.85-15,881.94

Finding the Fourth Proportional to 28,459.62, 39,272.85 and 15,881.94

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Solution

The fourth proportional to 28,459.62, 39,272.85 and 15,881.94 is: 21,916.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.62 : 39,272.85 = 15,881.94 : x
  2. Step 2: Convert to fraction form
    28,459.62/39,272.85 = 15,881.94/x
  3. Step 3: Cross multiply
    28,459.62x = 39,272.85 × 15,881.94
  4. Step 4: Simplify right side
    28,459.62x = 623,729,047.33
  5. Step 5: Solve for x
    x = 623,729,047.33/28,459.62
  6. Step 6: Final answer
    x = 21,916.28

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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.