Home / 25,783.90-38,685.04-15,911.68

Finding the Fourth Proportional to 25,783.90, 38,685.04 and 15,911.68

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Solution

The fourth proportional to 25,783.90, 38,685.04 and 15,911.68 is: 23,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,783.90 : 38,685.04 = 15,911.68 : x
  2. Step 2: Convert to fraction form
    25,783.90/38,685.04 = 15,911.68/x
  3. Step 3: Cross multiply
    25,783.90x = 38,685.04 × 15,911.68
  4. Step 4: Simplify right side
    25,783.90x = 615,543,977.27
  5. Step 5: Solve for x
    x = 615,543,977.27/25,783.90
  6. Step 6: Final answer
    x = 23,873.19

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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.