Home / 13,699.13-18,905.40-8,392.92

Finding the Fourth Proportional to 13,699.13, 18,905.40 and 8,392.92

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Solution

The fourth proportional to 13,699.13, 18,905.40 and 8,392.92 is: 11,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.13 : 18,905.40 = 8,392.92 : x
  2. Step 2: Convert to fraction form
    13,699.13/18,905.40 = 8,392.92/x
  3. Step 3: Cross multiply
    13,699.13x = 18,905.40 × 8,392.92
  4. Step 4: Simplify right side
    13,699.13x = 158,671,438.87
  5. Step 5: Solve for x
    x = 158,671,438.87/13,699.13
  6. Step 6: Final answer
    x = 11,582.60

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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.