Home / 40,814.80-61,222.20-13,115.60

Finding the Fourth Proportional to 40,814.80, 61,222.20 and 13,115.60

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Solution

The fourth proportional to 40,814.80, 61,222.20 and 13,115.60 is: 19,673.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,814.80 : 61,222.20 = 13,115.60 : x
  2. Step 2: Convert to fraction form
    40,814.80/61,222.20 = 13,115.60/x
  3. Step 3: Cross multiply
    40,814.80x = 61,222.20 × 13,115.60
  4. Step 4: Simplify right side
    40,814.80x = 802,965,886.32
  5. Step 5: Solve for x
    x = 802,965,886.32/40,814.80
  6. Step 6: Final answer
    x = 19,673.40

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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.