Home / 42,795.68-64,199.67-13,215.80

Finding the Fourth Proportional to 42,795.68, 64,199.67 and 13,215.80

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Solution

The fourth proportional to 42,795.68, 64,199.67 and 13,215.80 is: 19,825.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,795.68 : 64,199.67 = 13,215.80 : x
  2. Step 2: Convert to fraction form
    42,795.68/64,199.67 = 13,215.80/x
  3. Step 3: Cross multiply
    42,795.68x = 64,199.67 × 13,215.80
  4. Step 4: Simplify right side
    42,795.68x = 848,449,998.79
  5. Step 5: Solve for x
    x = 848,449,998.79/42,795.68
  6. Step 6: Final answer
    x = 19,825.60

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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.