Home / 15,911.13-23,860.68-12,783.45

Finding the Fourth Proportional to 15,911.13, 23,860.68 and 12,783.45

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Solution

The fourth proportional to 15,911.13, 23,860.68 and 12,783.45 is: 19,170.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.13 : 23,860.68 = 12,783.45 : x
  2. Step 2: Convert to fraction form
    15,911.13/23,860.68 = 12,783.45/x
  3. Step 3: Cross multiply
    15,911.13x = 23,860.68 × 12,783.45
  4. Step 4: Simplify right side
    15,911.13x = 305,021,809.75
  5. Step 5: Solve for x
    x = 305,021,809.75/15,911.13
  6. Step 6: Final answer
    x = 19,170.34

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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.