Home / 13,870.08-19,143-13,026.60

Finding the Fourth Proportional to 13,870.08, 19,143 and 13,026.60

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Solution

The fourth proportional to 13,870.08, 19,143 and 13,026.60 is: 17,978.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.08 : 19,143 = 13,026.60 : x
  2. Step 2: Convert to fraction form
    13,870.08/19,143 = 13,026.60/x
  3. Step 3: Cross multiply
    13,870.08x = 19,143 × 13,026.60
  4. Step 4: Simplify right side
    13,870.08x = 249,368,203.80
  5. Step 5: Solve for x
    x = 249,368,203.80/13,870.08
  6. Step 6: Final answer
    x = 17,978.86

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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.