Home / 19,543.60-29,316.64-7,855.20

Finding the Fourth Proportional to 19,543.60, 29,316.64 and 7,855.20

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Solution

The fourth proportional to 19,543.60, 29,316.64 and 7,855.20 is: 11,783.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,543.60 : 29,316.64 = 7,855.20 : x
  2. Step 2: Convert to fraction form
    19,543.60/29,316.64 = 7,855.20/x
  3. Step 3: Cross multiply
    19,543.60x = 29,316.64 × 7,855.20
  4. Step 4: Simplify right side
    19,543.60x = 230,288,070.53
  5. Step 5: Solve for x
    x = 230,288,070.53/19,543.60
  6. Step 6: Final answer
    x = 11,783.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.