Home / 10,518.60-14,530.86-8,190.84

Finding the Fourth Proportional to 10,518.60, 14,530.86 and 8,190.84

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Solution

The fourth proportional to 10,518.60, 14,530.86 and 8,190.84 is: 11,315.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.60 : 14,530.86 = 8,190.84 : x
  2. Step 2: Convert to fraction form
    10,518.60/14,530.86 = 8,190.84/x
  3. Step 3: Cross multiply
    10,518.60x = 14,530.86 × 8,190.84
  4. Step 4: Simplify right side
    10,518.60x = 119,019,949.32
  5. Step 5: Solve for x
    x = 119,019,949.32/10,518.60
  6. Step 6: Final answer
    x = 11,315.19

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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.