Home / 15,056.36-20,779.97-8,681.70

Finding the Fourth Proportional to 15,056.36, 20,779.97 and 8,681.70

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Solution

The fourth proportional to 15,056.36, 20,779.97 and 8,681.70 is: 11,982.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,056.36 : 20,779.97 = 8,681.70 : x
  2. Step 2: Convert to fraction form
    15,056.36/20,779.97 = 8,681.70/x
  3. Step 3: Cross multiply
    15,056.36x = 20,779.97 × 8,681.70
  4. Step 4: Simplify right side
    15,056.36x = 180,405,465.55
  5. Step 5: Solve for x
    x = 180,405,465.55/15,056.36
  6. Step 6: Final answer
    x = 11,982.01

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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.