Home / 13,518.60-18,655.47-7,550.35

Finding the Fourth Proportional to 13,518.60, 18,655.47 and 7,550.35

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Solution

The fourth proportional to 13,518.60, 18,655.47 and 7,550.35 is: 10,419.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.60 : 18,655.47 = 7,550.35 : x
  2. Step 2: Convert to fraction form
    13,518.60/18,655.47 = 7,550.35/x
  3. Step 3: Cross multiply
    13,518.60x = 18,655.47 × 7,550.35
  4. Step 4: Simplify right side
    13,518.60x = 140,855,290.16
  5. Step 5: Solve for x
    x = 140,855,290.16/13,518.60
  6. Step 6: Final answer
    x = 10,419.37

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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.