Home / 20,386.94-30,531.02-10,365.32

Finding the Fourth Proportional to 20,386.94, 30,531.02 and 10,365.32

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Solution

The fourth proportional to 20,386.94, 30,531.02 and 10,365.32 is: 15,522.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.94 : 30,531.02 = 10,365.32 : x
  2. Step 2: Convert to fraction form
    20,386.94/30,531.02 = 10,365.32/x
  3. Step 3: Cross multiply
    20,386.94x = 30,531.02 × 10,365.32
  4. Step 4: Simplify right side
    20,386.94x = 316,463,587.74
  5. Step 5: Solve for x
    x = 316,463,587.74/20,386.94
  6. Step 6: Final answer
    x = 15,522.86

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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.