Home / 14,784.29-20,402.75-8,409.70

Finding the Fourth Proportional to 14,784.29, 20,402.75 and 8,409.70

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Solution

The fourth proportional to 14,784.29, 20,402.75 and 8,409.70 is: 11,605.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,784.29 : 20,402.75 = 8,409.70 : x
  2. Step 2: Convert to fraction form
    14,784.29/20,402.75 = 8,409.70/x
  3. Step 3: Cross multiply
    14,784.29x = 20,402.75 × 8,409.70
  4. Step 4: Simplify right side
    14,784.29x = 171,580,976.69
  5. Step 5: Solve for x
    x = 171,580,976.69/14,784.29
  6. Step 6: Final answer
    x = 11,605.63

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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.