Home / 15,695.12-21,659.27-8,621.99

Finding the Fourth Proportional to 15,695.12, 21,659.27 and 8,621.99

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Solution

The fourth proportional to 15,695.12, 21,659.27 and 8,621.99 is: 11,898.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,695.12 : 21,659.27 = 8,621.99 : x
  2. Step 2: Convert to fraction form
    15,695.12/21,659.27 = 8,621.99/x
  3. Step 3: Cross multiply
    15,695.12x = 21,659.27 × 8,621.99
  4. Step 4: Simplify right side
    15,695.12x = 186,746,009.35
  5. Step 5: Solve for x
    x = 186,746,009.35/15,695.12
  6. Step 6: Final answer
    x = 11,898.35

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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.