Home / 13,856.12-19,117.86-8,818.28

Finding the Fourth Proportional to 13,856.12, 19,117.86 and 8,818.28

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Solution

The fourth proportional to 13,856.12, 19,117.86 and 8,818.28 is: 12,166.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.12 : 19,117.86 = 8,818.28 : x
  2. Step 2: Convert to fraction form
    13,856.12/19,117.86 = 8,818.28/x
  3. Step 3: Cross multiply
    13,856.12x = 19,117.86 × 8,818.28
  4. Step 4: Simplify right side
    13,856.12x = 168,586,642.48
  5. Step 5: Solve for x
    x = 168,586,642.48/13,856.12
  6. Step 6: Final answer
    x = 12,166.94

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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.