Home / 56,415.12-84,632.42-18,978.81

Finding the Fourth Proportional to 56,415.12, 84,632.42 and 18,978.81

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Solution

The fourth proportional to 56,415.12, 84,632.42 and 18,978.81 is: 28,471.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,415.12 : 84,632.42 = 18,978.81 : x
  2. Step 2: Convert to fraction form
    56,415.12/84,632.42 = 18,978.81/x
  3. Step 3: Cross multiply
    56,415.12x = 84,632.42 × 18,978.81
  4. Step 4: Simplify right side
    56,415.12x = 1,606,222,619.02
  5. Step 5: Solve for x
    x = 1,606,222,619.02/56,415.12
  6. Step 6: Final answer
    x = 28,471.49

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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.