Home / 19,019.60-28,529.40-5,168.60

Finding the Fourth Proportional to 19,019.60, 28,529.40 and 5,168.60

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Solution

The fourth proportional to 19,019.60, 28,529.40 and 5,168.60 is: 7,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,019.60 : 28,529.40 = 5,168.60 : x
  2. Step 2: Convert to fraction form
    19,019.60/28,529.40 = 5,168.60/x
  3. Step 3: Cross multiply
    19,019.60x = 28,529.40 × 5,168.60
  4. Step 4: Simplify right side
    19,019.60x = 147,457,056.84
  5. Step 5: Solve for x
    x = 147,457,056.84/19,019.60
  6. Step 6: Final answer
    x = 7,752.90

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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.