Home / 20,458.48-30,633-11,681.32

Finding the Fourth Proportional to 20,458.48, 30,633 and 11,681.32

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Solution

The fourth proportional to 20,458.48, 30,633 and 11,681.32 is: 17,490.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.48 : 30,633 = 11,681.32 : x
  2. Step 2: Convert to fraction form
    20,458.48/30,633 = 11,681.32/x
  3. Step 3: Cross multiply
    20,458.48x = 30,633 × 11,681.32
  4. Step 4: Simplify right side
    20,458.48x = 357,833,875.56
  5. Step 5: Solve for x
    x = 357,833,875.56/20,458.48
  6. Step 6: Final answer
    x = 17,490.74

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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.