Home / 26,287.48-39,398.40-13,143.61

Finding the Fourth Proportional to 26,287.48, 39,398.40 and 13,143.61

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Solution

The fourth proportional to 26,287.48, 39,398.40 and 13,143.61 is: 19,699.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,287.48 : 39,398.40 = 13,143.61 : x
  2. Step 2: Convert to fraction form
    26,287.48/39,398.40 = 13,143.61/x
  3. Step 3: Cross multiply
    26,287.48x = 39,398.40 × 13,143.61
  4. Step 4: Simplify right side
    26,287.48x = 517,837,105.73
  5. Step 5: Solve for x
    x = 517,837,105.73/26,287.48
  6. Step 6: Final answer
    x = 19,699.00

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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.