Home / 28,580.47-42,696.86-18,503.12

Finding the Fourth Proportional to 28,580.47, 42,696.86 and 18,503.12

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Solution

The fourth proportional to 28,580.47, 42,696.86 and 18,503.12 is: 27,642.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,580.47 : 42,696.86 = 18,503.12 : x
  2. Step 2: Convert to fraction form
    28,580.47/42,696.86 = 18,503.12/x
  3. Step 3: Cross multiply
    28,580.47x = 42,696.86 × 18,503.12
  4. Step 4: Simplify right side
    28,580.47x = 790,025,047.70
  5. Step 5: Solve for x
    x = 790,025,047.70/28,580.47
  6. Step 6: Final answer
    x = 27,642.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.