Home / 13,585.79-20,345.76-6,904.71

Finding the Fourth Proportional to 13,585.79, 20,345.76 and 6,904.71

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Solution

The fourth proportional to 13,585.79, 20,345.76 and 6,904.71 is: 10,340.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.79 : 20,345.76 = 6,904.71 : x
  2. Step 2: Convert to fraction form
    13,585.79/20,345.76 = 6,904.71/x
  3. Step 3: Cross multiply
    13,585.79x = 20,345.76 × 6,904.71
  4. Step 4: Simplify right side
    13,585.79x = 140,481,572.53
  5. Step 5: Solve for x
    x = 140,481,572.53/13,585.79
  6. Step 6: Final answer
    x = 10,340.34

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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.