Home / 20,565.84-28,390.73-13,015.83

Finding the Fourth Proportional to 20,565.84, 28,390.73 and 13,015.83

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Solution

The fourth proportional to 20,565.84, 28,390.73 and 13,015.83 is: 17,968.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.84 : 28,390.73 = 13,015.83 : x
  2. Step 2: Convert to fraction form
    20,565.84/28,390.73 = 13,015.83/x
  3. Step 3: Cross multiply
    20,565.84x = 28,390.73 × 13,015.83
  4. Step 4: Simplify right side
    20,565.84x = 369,528,850.18
  5. Step 5: Solve for x
    x = 369,528,850.18/20,565.84
  6. Step 6: Final answer
    x = 17,968.09

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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.