Home / 28,142.82-38,836.62-15,567.60

Finding the Fourth Proportional to 28,142.82, 38,836.62 and 15,567.60

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Solution

The fourth proportional to 28,142.82, 38,836.62 and 15,567.60 is: 21,483.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.82 : 38,836.62 = 15,567.60 : x
  2. Step 2: Convert to fraction form
    28,142.82/38,836.62 = 15,567.60/x
  3. Step 3: Cross multiply
    28,142.82x = 38,836.62 × 15,567.60
  4. Step 4: Simplify right side
    28,142.82x = 604,592,965.51
  5. Step 5: Solve for x
    x = 604,592,965.51/28,142.82
  6. Step 6: Final answer
    x = 21,483.03

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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.