Home / 13,308.60-19,955.70-5,518.20

Finding the Fourth Proportional to 13,308.60, 19,955.70 and 5,518.20

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Solution

The fourth proportional to 13,308.60, 19,955.70 and 5,518.20 is: 8,274.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.60 : 19,955.70 = 5,518.20 : x
  2. Step 2: Convert to fraction form
    13,308.60/19,955.70 = 5,518.20/x
  3. Step 3: Cross multiply
    13,308.60x = 19,955.70 × 5,518.20
  4. Step 4: Simplify right side
    13,308.60x = 110,119,543.74
  5. Step 5: Solve for x
    x = 110,119,543.74/13,308.60
  6. Step 6: Final answer
    x = 8,274.31

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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.