Home / 15,639.94-21,582.32-8,565

Finding the Fourth Proportional to 15,639.94, 21,582.32 and 8,565

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Solution

The fourth proportional to 15,639.94, 21,582.32 and 8,565 is: 11,819.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.94 : 21,582.32 = 8,565 : x
  2. Step 2: Convert to fraction form
    15,639.94/21,582.32 = 8,565/x
  3. Step 3: Cross multiply
    15,639.94x = 21,582.32 × 8,565
  4. Step 4: Simplify right side
    15,639.94x = 184,852,570.80
  5. Step 5: Solve for x
    x = 184,852,570.80/15,639.94
  6. Step 6: Final answer
    x = 11,819.26

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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.