Home / 28,577.81-39,438.86-15,832.39

Finding the Fourth Proportional to 28,577.81, 39,438.86 and 15,832.39

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Solution

The fourth proportional to 28,577.81, 39,438.86 and 15,832.39 is: 21,849.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,577.81 : 39,438.86 = 15,832.39 : x
  2. Step 2: Convert to fraction form
    28,577.81/39,438.86 = 15,832.39/x
  3. Step 3: Cross multiply
    28,577.81x = 39,438.86 × 15,832.39
  4. Step 4: Simplify right side
    28,577.81x = 624,411,412.68
  5. Step 5: Solve for x
    x = 624,411,412.68/28,577.81
  6. Step 6: Final answer
    x = 21,849.52

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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.