Home / 13,737.07-20,708.55-12,821.59

Finding the Fourth Proportional to 13,737.07, 20,708.55 and 12,821.59

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Solution

The fourth proportional to 13,737.07, 20,708.55 and 12,821.59 is: 19,328.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,737.07 : 20,708.55 = 12,821.59 : x
  2. Step 2: Convert to fraction form
    13,737.07/20,708.55 = 12,821.59/x
  3. Step 3: Cross multiply
    13,737.07x = 20,708.55 × 12,821.59
  4. Step 4: Simplify right side
    13,737.07x = 265,516,545.45
  5. Step 5: Solve for x
    x = 265,516,545.45/13,737.07
  6. Step 6: Final answer
    x = 19,328.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.