Home / 21,807.90-30,099.78-13,848.66

Finding the Fourth Proportional to 21,807.90, 30,099.78 and 13,848.66

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Solution

The fourth proportional to 21,807.90, 30,099.78 and 13,848.66 is: 19,114.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,807.90 : 30,099.78 = 13,848.66 : x
  2. Step 2: Convert to fraction form
    21,807.90/30,099.78 = 13,848.66/x
  3. Step 3: Cross multiply
    21,807.90x = 30,099.78 × 13,848.66
  4. Step 4: Simplify right side
    21,807.90x = 416,841,619.29
  5. Step 5: Solve for x
    x = 416,841,619.29/21,807.90
  6. Step 6: Final answer
    x = 19,114.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.