Home / 13,873.86-19,142.24-7,905.40

Finding the Fourth Proportional to 13,873.86, 19,142.24 and 7,905.40

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Solution

The fourth proportional to 13,873.86, 19,142.24 and 7,905.40 is: 10,907.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,873.86 : 19,142.24 = 7,905.40 : x
  2. Step 2: Convert to fraction form
    13,873.86/19,142.24 = 7,905.40/x
  3. Step 3: Cross multiply
    13,873.86x = 19,142.24 × 7,905.40
  4. Step 4: Simplify right side
    13,873.86x = 151,327,111.95
  5. Step 5: Solve for x
    x = 151,327,111.95/13,873.86
  6. Step 6: Final answer
    x = 10,907.35

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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.