Home / 28,508.84-39,342.32-15,588.40

Finding the Fourth Proportional to 28,508.84, 39,342.32 and 15,588.40

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Solution

The fourth proportional to 28,508.84, 39,342.32 and 15,588.40 is: 21,512.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.84 : 39,342.32 = 15,588.40 : x
  2. Step 2: Convert to fraction form
    28,508.84/39,342.32 = 15,588.40/x
  3. Step 3: Cross multiply
    28,508.84x = 39,342.32 × 15,588.40
  4. Step 4: Simplify right side
    28,508.84x = 613,283,821.09
  5. Step 5: Solve for x
    x = 613,283,821.09/28,508.84
  6. Step 6: Final answer
    x = 21,512.06

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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.