Home / 14,707.56-20,296.44-8,421.15

Finding the Fourth Proportional to 14,707.56, 20,296.44 and 8,421.15

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Solution

The fourth proportional to 14,707.56, 20,296.44 and 8,421.15 is: 11,621.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,707.56 : 20,296.44 = 8,421.15 : x
  2. Step 2: Convert to fraction form
    14,707.56/20,296.44 = 8,421.15/x
  3. Step 3: Cross multiply
    14,707.56x = 20,296.44 × 8,421.15
  4. Step 4: Simplify right side
    14,707.56x = 170,919,365.71
  5. Step 5: Solve for x
    x = 170,919,365.71/14,707.56
  6. Step 6: Final answer
    x = 11,621.19

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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.