Home / 25,795.80-38,688.30-12,657.60

Finding the Fourth Proportional to 25,795.80, 38,688.30 and 12,657.60

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Solution

The fourth proportional to 25,795.80, 38,688.30 and 12,657.60 is: 18,983.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,795.80 : 38,688.30 = 12,657.60 : x
  2. Step 2: Convert to fraction form
    25,795.80/38,688.30 = 12,657.60/x
  3. Step 3: Cross multiply
    25,795.80x = 38,688.30 × 12,657.60
  4. Step 4: Simplify right side
    25,795.80x = 489,701,026.08
  5. Step 5: Solve for x
    x = 489,701,026.08/25,795.80
  6. Step 6: Final answer
    x = 18,983.75

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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.