Home / 22,740.30-31,381.16-12,668.72

Finding the Fourth Proportional to 22,740.30, 31,381.16 and 12,668.72

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Solution

The fourth proportional to 22,740.30, 31,381.16 and 12,668.72 is: 17,482.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,740.30 : 31,381.16 = 12,668.72 : x
  2. Step 2: Convert to fraction form
    22,740.30/31,381.16 = 12,668.72/x
  3. Step 3: Cross multiply
    22,740.30x = 31,381.16 × 12,668.72
  4. Step 4: Simplify right side
    22,740.30x = 397,558,909.07
  5. Step 5: Solve for x
    x = 397,558,909.07/22,740.30
  6. Step 6: Final answer
    x = 17,482.57

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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.