Home / 42,871.44-64,316.88-13,290.24

Finding the Fourth Proportional to 42,871.44, 64,316.88 and 13,290.24

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Solution

The fourth proportional to 42,871.44, 64,316.88 and 13,290.24 is: 19,938.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,871.44 : 64,316.88 = 13,290.24 : x
  2. Step 2: Convert to fraction form
    42,871.44/64,316.88 = 13,290.24/x
  3. Step 3: Cross multiply
    42,871.44x = 64,316.88 × 13,290.24
  4. Step 4: Simplify right side
    42,871.44x = 854,786,771.25
  5. Step 5: Solve for x
    x = 854,786,771.25/42,871.44
  6. Step 6: Final answer
    x = 19,938.37

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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.