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Finding the Fourth Proportional to 25,653.60, 38,437.20 and 12,477.60

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Solution

The fourth proportional to 25,653.60, 38,437.20 and 12,477.60 is: 18,695.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,653.60 : 38,437.20 = 12,477.60 : x
  2. Step 2: Convert to fraction form
    25,653.60/38,437.20 = 12,477.60/x
  3. Step 3: Cross multiply
    25,653.60x = 38,437.20 × 12,477.60
  4. Step 4: Simplify right side
    25,653.60x = 479,604,006.72
  5. Step 5: Solve for x
    x = 479,604,006.72/25,653.60
  6. Step 6: Final answer
    x = 18,695.39

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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.