Home / 13,570.45-18,712.14-8,528.60

Finding the Fourth Proportional to 13,570.45, 18,712.14 and 8,528.60

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Solution

The fourth proportional to 13,570.45, 18,712.14 and 8,528.60 is: 11,759.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,570.45 : 18,712.14 = 8,528.60 : x
  2. Step 2: Convert to fraction form
    13,570.45/18,712.14 = 8,528.60/x
  3. Step 3: Cross multiply
    13,570.45x = 18,712.14 × 8,528.60
  4. Step 4: Simplify right side
    13,570.45x = 159,588,357.20
  5. Step 5: Solve for x
    x = 159,588,357.20/13,570.45
  6. Step 6: Final answer
    x = 11,759.99

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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.