Home / 28,456.48-39,266.32-15,881.76

Finding the Fourth Proportional to 28,456.48, 39,266.32 and 15,881.76

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Solution

The fourth proportional to 28,456.48, 39,266.32 and 15,881.76 is: 21,914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.48 : 39,266.32 = 15,881.76 : x
  2. Step 2: Convert to fraction form
    28,456.48/39,266.32 = 15,881.76/x
  3. Step 3: Cross multiply
    28,456.48x = 39,266.32 × 15,881.76
  4. Step 4: Simplify right side
    28,456.48x = 623,618,270.32
  5. Step 5: Solve for x
    x = 623,618,270.32/28,456.48
  6. Step 6: Final answer
    x = 21,914.81

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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.