Home / 13,685.14-20,495.13-8,739.46

Finding the Fourth Proportional to 13,685.14, 20,495.13 and 8,739.46

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Solution

The fourth proportional to 13,685.14, 20,495.13 and 8,739.46 is: 13,088.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.14 : 20,495.13 = 8,739.46 : x
  2. Step 2: Convert to fraction form
    13,685.14/20,495.13 = 8,739.46/x
  3. Step 3: Cross multiply
    13,685.14x = 20,495.13 × 8,739.46
  4. Step 4: Simplify right side
    13,685.14x = 179,116,368.83
  5. Step 5: Solve for x
    x = 179,116,368.83/13,685.14
  6. Step 6: Final answer
    x = 13,088.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.