Home / 28,200.48-38,915.82-15,453.51

Finding the Fourth Proportional to 28,200.48, 38,915.82 and 15,453.51

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Solution

The fourth proportional to 28,200.48, 38,915.82 and 15,453.51 is: 21,325.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.48 : 38,915.82 = 15,453.51 : x
  2. Step 2: Convert to fraction form
    28,200.48/38,915.82 = 15,453.51/x
  3. Step 3: Cross multiply
    28,200.48x = 38,915.82 × 15,453.51
  4. Step 4: Simplify right side
    28,200.48x = 601,386,013.53
  5. Step 5: Solve for x
    x = 601,386,013.53/28,200.48
  6. Step 6: Final answer
    x = 21,325.38

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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.