Home / 28,349.39-39,122.16-15,774.14

Finding the Fourth Proportional to 28,349.39, 39,122.16 and 15,774.14

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Solution

The fourth proportional to 28,349.39, 39,122.16 and 15,774.14 is: 21,768.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,349.39 : 39,122.16 = 15,774.14 : x
  2. Step 2: Convert to fraction form
    28,349.39/39,122.16 = 15,774.14/x
  3. Step 3: Cross multiply
    28,349.39x = 39,122.16 × 15,774.14
  4. Step 4: Simplify right side
    28,349.39x = 617,118,428.94
  5. Step 5: Solve for x
    x = 617,118,428.94/28,349.39
  6. Step 6: Final answer
    x = 21,768.31

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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.