Home / 19,864.40-29,798.40-8,175.20

Finding the Fourth Proportional to 19,864.40, 29,798.40 and 8,175.20

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Solution

The fourth proportional to 19,864.40, 29,798.40 and 8,175.20 is: 12,263.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.40 : 29,798.40 = 8,175.20 : x
  2. Step 2: Convert to fraction form
    19,864.40/29,798.40 = 8,175.20/x
  3. Step 3: Cross multiply
    19,864.40x = 29,798.40 × 8,175.20
  4. Step 4: Simplify right side
    19,864.40x = 243,607,879.68
  5. Step 5: Solve for x
    x = 243,607,879.68/19,864.40
  6. Step 6: Final answer
    x = 12,263.54

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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.