Home / 10,403.09-15,602.60-8,659.30

Finding the Fourth Proportional to 10,403.09, 15,602.60 and 8,659.30

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Solution

The fourth proportional to 10,403.09, 15,602.60 and 8,659.30 is: 12,987.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,403.09 : 15,602.60 = 8,659.30 : x
  2. Step 2: Convert to fraction form
    10,403.09/15,602.60 = 8,659.30/x
  3. Step 3: Cross multiply
    10,403.09x = 15,602.60 × 8,659.30
  4. Step 4: Simplify right side
    10,403.09x = 135,107,581.72
  5. Step 5: Solve for x
    x = 135,107,581.72/10,403.09
  6. Step 6: Final answer
    x = 12,987.25

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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.