Home / 42,918.42-64,367.79-11,756.10

Finding the Fourth Proportional to 42,918.42, 64,367.79 and 11,756.10

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Solution

The fourth proportional to 42,918.42, 64,367.79 and 11,756.10 is: 17,631.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,918.42 : 64,367.79 = 11,756.10 : x
  2. Step 2: Convert to fraction form
    42,918.42/64,367.79 = 11,756.10/x
  3. Step 3: Cross multiply
    42,918.42x = 64,367.79 × 11,756.10
  4. Step 4: Simplify right side
    42,918.42x = 756,714,176.02
  5. Step 5: Solve for x
    x = 756,714,176.02/42,918.42
  6. Step 6: Final answer
    x = 17,631.45

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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.