Home / 13,985.44-21,061.48-12,614.56

Finding the Fourth Proportional to 13,985.44, 21,061.48 and 12,614.56

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Solution

The fourth proportional to 13,985.44, 21,061.48 and 12,614.56 is: 18,996.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.44 : 21,061.48 = 12,614.56 : x
  2. Step 2: Convert to fraction form
    13,985.44/21,061.48 = 12,614.56/x
  3. Step 3: Cross multiply
    13,985.44x = 21,061.48 × 12,614.56
  4. Step 4: Simplify right side
    13,985.44x = 265,681,303.15
  5. Step 5: Solve for x
    x = 265,681,303.15/13,985.44
  6. Step 6: Final answer
    x = 18,996.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.