Home / 40,820.86-61,218.32-13,112.38

Finding the Fourth Proportional to 40,820.86, 61,218.32 and 13,112.38

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Solution

The fourth proportional to 40,820.86, 61,218.32 and 13,112.38 is: 19,664.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,820.86 : 61,218.32 = 13,112.38 : x
  2. Step 2: Convert to fraction form
    40,820.86/61,218.32 = 13,112.38/x
  3. Step 3: Cross multiply
    40,820.86x = 61,218.32 × 13,112.38
  4. Step 4: Simplify right side
    40,820.86x = 802,717,568.71
  5. Step 5: Solve for x
    x = 802,717,568.71/40,820.86
  6. Step 6: Final answer
    x = 19,664.40

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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.