Home / 28,340.47-42,495.27-18,343.81

Finding the Fourth Proportional to 28,340.47, 42,495.27 and 18,343.81

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Solution

The fourth proportional to 28,340.47, 42,495.27 and 18,343.81 is: 27,505.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,340.47 : 42,495.27 = 18,343.81 : x
  2. Step 2: Convert to fraction form
    28,340.47/42,495.27 = 18,343.81/x
  3. Step 3: Cross multiply
    28,340.47x = 42,495.27 × 18,343.81
  4. Step 4: Simplify right side
    28,340.47x = 779,525,158.78
  5. Step 5: Solve for x
    x = 779,525,158.78/28,340.47
  6. Step 6: Final answer
    x = 27,505.72

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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.