Home / 28,339.47-42,493.77-18,342.81

Finding the Fourth Proportional to 28,339.47, 42,493.77 and 18,342.81

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Solution

The fourth proportional to 28,339.47, 42,493.77 and 18,342.81 is: 27,504.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339.47 : 42,493.77 = 18,342.81 : x
  2. Step 2: Convert to fraction form
    28,339.47/42,493.77 = 18,342.81/x
  3. Step 3: Cross multiply
    28,339.47x = 42,493.77 × 18,342.81
  4. Step 4: Simplify right side
    28,339.47x = 779,455,149.29
  5. Step 5: Solve for x
    x = 779,455,149.29/28,339.47
  6. Step 6: Final answer
    x = 27,504.22

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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.