Home / 14,478.26-19,980.42-8,190.50

Finding the Fourth Proportional to 14,478.26, 19,980.42 and 8,190.50

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Solution

The fourth proportional to 14,478.26, 19,980.42 and 8,190.50 is: 11,303.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.26 : 19,980.42 = 8,190.50 : x
  2. Step 2: Convert to fraction form
    14,478.26/19,980.42 = 8,190.50/x
  3. Step 3: Cross multiply
    14,478.26x = 19,980.42 × 8,190.50
  4. Step 4: Simplify right side
    14,478.26x = 163,649,630.01
  5. Step 5: Solve for x
    x = 163,649,630.01/14,478.26
  6. Step 6: Final answer
    x = 11,303.13

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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.