Home / 11,312.04-15,611.12-6,276.80

Finding the Fourth Proportional to 11,312.04, 15,611.12 and 6,276.80

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Solution

The fourth proportional to 11,312.04, 15,611.12 and 6,276.80 is: 8,662.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,312.04 : 15,611.12 = 6,276.80 : x
  2. Step 2: Convert to fraction form
    11,312.04/15,611.12 = 6,276.80/x
  3. Step 3: Cross multiply
    11,312.04x = 15,611.12 × 6,276.80
  4. Step 4: Simplify right side
    11,312.04x = 97,987,878.02
  5. Step 5: Solve for x
    x = 97,987,878.02/11,312.04
  6. Step 6: Final answer
    x = 8,662.26

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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.