Home / 15,629.52-21,569.04-8,555.79

Finding the Fourth Proportional to 15,629.52, 21,569.04 and 8,555.79

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Solution

The fourth proportional to 15,629.52, 21,569.04 and 8,555.79 is: 11,807.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.52 : 21,569.04 = 8,555.79 : x
  2. Step 2: Convert to fraction form
    15,629.52/21,569.04 = 8,555.79/x
  3. Step 3: Cross multiply
    15,629.52x = 21,569.04 × 8,555.79
  4. Step 4: Simplify right side
    15,629.52x = 184,540,176.74
  5. Step 5: Solve for x
    x = 184,540,176.74/15,629.52
  6. Step 6: Final answer
    x = 11,807.16

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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.