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Finding the Fourth Proportional to 15,806.32, 21,800.28 and 14,746.48

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Solution

The fourth proportional to 15,806.32, 21,800.28 and 14,746.48 is: 20,338.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,806.32 : 21,800.28 = 14,746.48 : x
  2. Step 2: Convert to fraction form
    15,806.32/21,800.28 = 14,746.48/x
  3. Step 3: Cross multiply
    15,806.32x = 21,800.28 × 14,746.48
  4. Step 4: Simplify right side
    15,806.32x = 321,477,393.01
  5. Step 5: Solve for x
    x = 321,477,393.01/15,806.32
  6. Step 6: Final answer
    x = 20,338.54

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1.5x scale

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.