Home / 15,528.25-21,434.39-9,240.49

Finding the Fourth Proportional to 15,528.25, 21,434.39 and 9,240.49

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Solution

The fourth proportional to 15,528.25, 21,434.39 and 9,240.49 is: 12,755.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.25 : 21,434.39 = 9,240.49 : x
  2. Step 2: Convert to fraction form
    15,528.25/21,434.39 = 9,240.49/x
  3. Step 3: Cross multiply
    15,528.25x = 21,434.39 × 9,240.49
  4. Step 4: Simplify right side
    15,528.25x = 198,064,266.45
  5. Step 5: Solve for x
    x = 198,064,266.45/15,528.25
  6. Step 6: Final answer
    x = 12,755.09

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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.