Home / 15,117.36-20,856.32-11,148

Finding the Fourth Proportional to 15,117.36, 20,856.32 and 11,148

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Solution

The fourth proportional to 15,117.36, 20,856.32 and 11,148 is: 15,380.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.36 : 20,856.32 = 11,148 : x
  2. Step 2: Convert to fraction form
    15,117.36/20,856.32 = 11,148/x
  3. Step 3: Cross multiply
    15,117.36x = 20,856.32 × 11,148
  4. Step 4: Simplify right side
    15,117.36x = 232,506,255.36
  5. Step 5: Solve for x
    x = 232,506,255.36/15,117.36
  6. Step 6: Final answer
    x = 15,380.08

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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.