Home / 28,617.06-39,510.07-18,412.65

Finding the Fourth Proportional to 28,617.06, 39,510.07 and 18,412.65

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Solution

The fourth proportional to 28,617.06, 39,510.07 and 18,412.65 is: 25,421.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,617.06 : 39,510.07 = 18,412.65 : x
  2. Step 2: Convert to fraction form
    28,617.06/39,510.07 = 18,412.65/x
  3. Step 3: Cross multiply
    28,617.06x = 39,510.07 × 18,412.65
  4. Step 4: Simplify right side
    28,617.06x = 727,485,090.39
  5. Step 5: Solve for x
    x = 727,485,090.39/28,617.06
  6. Step 6: Final answer
    x = 25,421.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.