Home / 13,656.52-20,490.86-11,903.28

Finding the Fourth Proportional to 13,656.52, 20,490.86 and 11,903.28

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Solution

The fourth proportional to 13,656.52, 20,490.86 and 11,903.28 is: 17,860.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.52 : 20,490.86 = 11,903.28 : x
  2. Step 2: Convert to fraction form
    13,656.52/20,490.86 = 11,903.28/x
  3. Step 3: Cross multiply
    13,656.52x = 20,490.86 × 11,903.28
  4. Step 4: Simplify right side
    13,656.52x = 243,908,444.02
  5. Step 5: Solve for x
    x = 243,908,444.02/13,656.52
  6. Step 6: Final answer
    x = 17,860.22

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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.