Home / 15,639.60-21,582.72-8,566

Finding the Fourth Proportional to 15,639.60, 21,582.72 and 8,566

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Solution

The fourth proportional to 15,639.60, 21,582.72 and 8,566 is: 11,821.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.60 : 21,582.72 = 8,566 : x
  2. Step 2: Convert to fraction form
    15,639.60/21,582.72 = 8,566/x
  3. Step 3: Cross multiply
    15,639.60x = 21,582.72 × 8,566
  4. Step 4: Simplify right side
    15,639.60x = 184,877,579.52
  5. Step 5: Solve for x
    x = 184,877,579.52/15,639.60
  6. Step 6: Final answer
    x = 11,821.12

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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.