Home / 19,131.98-28,703.63-9,144.20

Finding the Fourth Proportional to 19,131.98, 28,703.63 and 9,144.20

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Solution

The fourth proportional to 19,131.98, 28,703.63 and 9,144.20 is: 13,719.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.98 : 28,703.63 = 9,144.20 : x
  2. Step 2: Convert to fraction form
    19,131.98/28,703.63 = 9,144.20/x
  3. Step 3: Cross multiply
    19,131.98x = 28,703.63 × 9,144.20
  4. Step 4: Simplify right side
    19,131.98x = 262,471,612.79
  5. Step 5: Solve for x
    x = 262,471,612.79/19,131.98
  6. Step 6: Final answer
    x = 13,719.00

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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.