Home / 28,562.51-42,871.44-13,781.81

Finding the Fourth Proportional to 28,562.51, 42,871.44 and 13,781.81

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Solution

The fourth proportional to 28,562.51, 42,871.44 and 13,781.81 is: 20,686.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,562.51 : 42,871.44 = 13,781.81 : x
  2. Step 2: Convert to fraction form
    28,562.51/42,871.44 = 13,781.81/x
  3. Step 3: Cross multiply
    28,562.51x = 42,871.44 × 13,781.81
  4. Step 4: Simplify right side
    28,562.51x = 590,846,040.51
  5. Step 5: Solve for x
    x = 590,846,040.51/28,562.51
  6. Step 6: Final answer
    x = 20,686.07

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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.