Home / 15,695.47-21,659.64-8,621.83

Finding the Fourth Proportional to 15,695.47, 21,659.64 and 8,621.83

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Solution

The fourth proportional to 15,695.47, 21,659.64 and 8,621.83 is: 11,898.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,695.47 : 21,659.64 = 8,621.83 : x
  2. Step 2: Convert to fraction form
    15,695.47/21,659.64 = 8,621.83/x
  3. Step 3: Cross multiply
    15,695.47x = 21,659.64 × 8,621.83
  4. Step 4: Simplify right side
    15,695.47x = 186,745,733.94
  5. Step 5: Solve for x
    x = 186,745,733.94/15,695.47
  6. Step 6: Final answer
    x = 11,898.07

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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.