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Finding the Fourth Proportional to 25,890.39, 35,728.74 and 14,712.39

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Solution

The fourth proportional to 25,890.39, 35,728.74 and 14,712.39 is: 20,303.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,890.39 : 35,728.74 = 14,712.39 : x
  2. Step 2: Convert to fraction form
    25,890.39/35,728.74 = 14,712.39/x
  3. Step 3: Cross multiply
    25,890.39x = 35,728.74 × 14,712.39
  4. Step 4: Simplify right side
    25,890.39x = 525,655,157.09
  5. Step 5: Solve for x
    x = 525,655,157.09/25,890.39
  6. Step 6: Final answer
    x = 20,303.10

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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.