Home / 22,980.48-31,711.84-12,909.34

Finding the Fourth Proportional to 22,980.48, 31,711.84 and 12,909.34

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Solution

The fourth proportional to 22,980.48, 31,711.84 and 12,909.34 is: 17,814.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,980.48 : 31,711.84 = 12,909.34 : x
  2. Step 2: Convert to fraction form
    22,980.48/31,711.84 = 12,909.34/x
  3. Step 3: Cross multiply
    22,980.48x = 31,711.84 × 12,909.34
  4. Step 4: Simplify right side
    22,980.48x = 409,379,020.00
  5. Step 5: Solve for x
    x = 409,379,020.00/22,980.48
  6. Step 6: Final answer
    x = 17,814.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.