Home / 15,155.83-20,914-9,490.33

Finding the Fourth Proportional to 15,155.83, 20,914 and 9,490.33

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Solution

The fourth proportional to 15,155.83, 20,914 and 9,490.33 is: 13,096.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.83 : 20,914 = 9,490.33 : x
  2. Step 2: Convert to fraction form
    15,155.83/20,914 = 9,490.33/x
  3. Step 3: Cross multiply
    15,155.83x = 20,914 × 9,490.33
  4. Step 4: Simplify right side
    15,155.83x = 198,480,761.62
  5. Step 5: Solve for x
    x = 198,480,761.62/15,155.83
  6. Step 6: Final answer
    x = 13,096.00

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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.