Home / 43,154.03-64,731.86-11,990.09

Finding the Fourth Proportional to 43,154.03, 64,731.86 and 11,990.09

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Solution

The fourth proportional to 43,154.03, 64,731.86 and 11,990.09 is: 17,985.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,154.03 : 64,731.86 = 11,990.09 : x
  2. Step 2: Convert to fraction form
    43,154.03/64,731.86 = 11,990.09/x
  3. Step 3: Cross multiply
    43,154.03x = 64,731.86 × 11,990.09
  4. Step 4: Simplify right side
    43,154.03x = 776,140,827.27
  5. Step 5: Solve for x
    x = 776,140,827.27/43,154.03
  6. Step 6: Final answer
    x = 17,985.36

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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.