Home / 28,459.96-39,278.46-15,887.32

Finding the Fourth Proportional to 28,459.96, 39,278.46 and 15,887.32

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Solution

The fourth proportional to 28,459.96, 39,278.46 and 15,887.32 is: 21,926.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.96 : 39,278.46 = 15,887.32 : x
  2. Step 2: Convert to fraction form
    28,459.96/39,278.46 = 15,887.32/x
  3. Step 3: Cross multiply
    28,459.96x = 39,278.46 × 15,887.32
  4. Step 4: Simplify right side
    28,459.96x = 624,029,463.13
  5. Step 5: Solve for x
    x = 624,029,463.13/28,459.96
  6. Step 6: Final answer
    x = 21,926.58

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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.