Home / 15,611.16-21,543.72-8,538.04

Finding the Fourth Proportional to 15,611.16, 21,543.72 and 8,538.04

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Solution

The fourth proportional to 15,611.16, 21,543.72 and 8,538.04 is: 11,782.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.16 : 21,543.72 = 8,538.04 : x
  2. Step 2: Convert to fraction form
    15,611.16/21,543.72 = 8,538.04/x
  3. Step 3: Cross multiply
    15,611.16x = 21,543.72 × 8,538.04
  4. Step 4: Simplify right side
    15,611.16x = 183,941,186.05
  5. Step 5: Solve for x
    x = 183,941,186.05/15,611.16
  6. Step 6: Final answer
    x = 11,782.67

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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.