Home / 15,639.81-21,582.99-8,566.23

Finding the Fourth Proportional to 15,639.81, 21,582.99 and 8,566.23

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Solution

The fourth proportional to 15,639.81, 21,582.99 and 8,566.23 is: 11,821.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.81 : 21,582.99 = 8,566.23 : x
  2. Step 2: Convert to fraction form
    15,639.81/21,582.99 = 8,566.23/x
  3. Step 3: Cross multiply
    15,639.81x = 21,582.99 × 8,566.23
  4. Step 4: Simplify right side
    15,639.81x = 184,884,856.43
  5. Step 5: Solve for x
    x = 184,884,856.43/15,639.81
  6. Step 6: Final answer
    x = 11,821.43

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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.