Home / 13,856.52-19,117.52-7,887.28

Finding the Fourth Proportional to 13,856.52, 19,117.52 and 7,887.28

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Solution

The fourth proportional to 13,856.52, 19,117.52 and 7,887.28 is: 10,881.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.52 : 19,117.52 = 7,887.28 : x
  2. Step 2: Convert to fraction form
    13,856.52/19,117.52 = 7,887.28/x
  3. Step 3: Cross multiply
    13,856.52x = 19,117.52 × 7,887.28
  4. Step 4: Simplify right side
    13,856.52x = 150,785,233.15
  5. Step 5: Solve for x
    x = 150,785,233.15/13,856.52
  6. Step 6: Final answer
    x = 10,881.90

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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.