Home / 18,373.36-25,355.10-9,989.86

Finding the Fourth Proportional to 18,373.36, 25,355.10 and 9,989.86

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Solution

The fourth proportional to 18,373.36, 25,355.10 and 9,989.86 is: 13,785.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373.36 : 25,355.10 = 9,989.86 : x
  2. Step 2: Convert to fraction form
    18,373.36/25,355.10 = 9,989.86/x
  3. Step 3: Cross multiply
    18,373.36x = 25,355.10 × 9,989.86
  4. Step 4: Simplify right side
    18,373.36x = 253,293,899.29
  5. Step 5: Solve for x
    x = 253,293,899.29/18,373.36
  6. Step 6: Final answer
    x = 13,785.93

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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.