Home / 12,465.47-18,685.07-4,143.25

Finding the Fourth Proportional to 12,465.47, 18,685.07 and 4,143.25

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Solution

The fourth proportional to 12,465.47, 18,685.07 and 4,143.25 is: 6,210.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,465.47 : 18,685.07 = 4,143.25 : x
  2. Step 2: Convert to fraction form
    12,465.47/18,685.07 = 4,143.25/x
  3. Step 3: Cross multiply
    12,465.47x = 18,685.07 × 4,143.25
  4. Step 4: Simplify right side
    12,465.47x = 77,416,916.28
  5. Step 5: Solve for x
    x = 77,416,916.28/12,465.47
  6. Step 6: Final answer
    x = 6,210.51

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Double scale
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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.