Home / 15,659.97-21,611.75-10,345.47

Finding the Fourth Proportional to 15,659.97, 21,611.75 and 10,345.47

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Solution

The fourth proportional to 15,659.97, 21,611.75 and 10,345.47 is: 14,277.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.97 : 21,611.75 = 10,345.47 : x
  2. Step 2: Convert to fraction form
    15,659.97/21,611.75 = 10,345.47/x
  3. Step 3: Cross multiply
    15,659.97x = 21,611.75 × 10,345.47
  4. Step 4: Simplify right side
    15,659.97x = 223,583,711.27
  5. Step 5: Solve for x
    x = 223,583,711.27/15,659.97
  6. Step 6: Final answer
    x = 14,277.40

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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.