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Finding the Fourth Proportional to 25,655.20, 35,399.60 and 14,477.20

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Solution

The fourth proportional to 25,655.20, 35,399.60 and 14,477.20 is: 19,975.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,655.20 : 35,399.60 = 14,477.20 : x
  2. Step 2: Convert to fraction form
    25,655.20/35,399.60 = 14,477.20/x
  3. Step 3: Cross multiply
    25,655.20x = 35,399.60 × 14,477.20
  4. Step 4: Simplify right side
    25,655.20x = 512,487,089.12
  5. Step 5: Solve for x
    x = 512,487,089.12/25,655.20
  6. Step 6: Final answer
    x = 19,975.95

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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.