Home / 42,764.88-64,153.36-13,185.12

Finding the Fourth Proportional to 42,764.88, 64,153.36 and 13,185.12

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Solution

The fourth proportional to 42,764.88, 64,153.36 and 13,185.12 is: 19,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,764.88 : 64,153.36 = 13,185.12 : x
  2. Step 2: Convert to fraction form
    42,764.88/64,153.36 = 13,185.12/x
  3. Step 3: Cross multiply
    42,764.88x = 64,153.36 × 13,185.12
  4. Step 4: Simplify right side
    42,764.88x = 845,869,750.00
  5. Step 5: Solve for x
    x = 845,869,750.00/42,764.88
  6. Step 6: Final answer
    x = 19,779.54

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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.