Home / 15,611.27-21,543.93-8,538.21

Finding the Fourth Proportional to 15,611.27, 21,543.93 and 8,538.21

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Solution

The fourth proportional to 15,611.27, 21,543.93 and 8,538.21 is: 11,782.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.27 : 21,543.93 = 8,538.21 : x
  2. Step 2: Convert to fraction form
    15,611.27/21,543.93 = 8,538.21/x
  3. Step 3: Cross multiply
    15,611.27x = 21,543.93 × 8,538.21
  4. Step 4: Simplify right side
    15,611.27x = 183,946,598.57
  5. Step 5: Solve for x
    x = 183,946,598.57/15,611.27
  6. Step 6: Final answer
    x = 11,782.94

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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.