Home / 14,004.90-20,987.55-7,767.66

Finding the Fourth Proportional to 14,004.90, 20,987.55 and 7,767.66

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Solution

The fourth proportional to 14,004.90, 20,987.55 and 7,767.66 is: 11,640.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,004.90 : 20,987.55 = 7,767.66 : x
  2. Step 2: Convert to fraction form
    14,004.90/20,987.55 = 7,767.66/x
  3. Step 3: Cross multiply
    14,004.90x = 20,987.55 × 7,767.66
  4. Step 4: Simplify right side
    14,004.90x = 163,024,152.63
  5. Step 5: Solve for x
    x = 163,024,152.63/14,004.90
  6. Step 6: Final answer
    x = 11,640.51

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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.