Home / 13,117.47-19,678.94-4,351.76

Finding the Fourth Proportional to 13,117.47, 19,678.94 and 4,351.76

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Solution

The fourth proportional to 13,117.47, 19,678.94 and 4,351.76 is: 6,528.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.47 : 19,678.94 = 4,351.76 : x
  2. Step 2: Convert to fraction form
    13,117.47/19,678.94 = 4,351.76/x
  3. Step 3: Cross multiply
    13,117.47x = 19,678.94 × 4,351.76
  4. Step 4: Simplify right side
    13,117.47x = 85,638,023.93
  5. Step 5: Solve for x
    x = 85,638,023.93/13,117.47
  6. Step 6: Final answer
    x = 6,528.55

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1.5x scale

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.