Home / 14,720.91-20,308.34-9,810.66

Finding the Fourth Proportional to 14,720.91, 20,308.34 and 9,810.66

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Solution

The fourth proportional to 14,720.91, 20,308.34 and 9,810.66 is: 13,534.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,720.91 : 20,308.34 = 9,810.66 : x
  2. Step 2: Convert to fraction form
    14,720.91/20,308.34 = 9,810.66/x
  3. Step 3: Cross multiply
    14,720.91x = 20,308.34 × 9,810.66
  4. Step 4: Simplify right side
    14,720.91x = 199,238,169.85
  5. Step 5: Solve for x
    x = 199,238,169.85/14,720.91
  6. Step 6: Final answer
    x = 13,534.37

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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.