Home / 22,421.69-30,939.23-12,861.08

Finding the Fourth Proportional to 22,421.69, 30,939.23 and 12,861.08

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Solution

The fourth proportional to 22,421.69, 30,939.23 and 12,861.08 is: 17,746.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,421.69 : 30,939.23 = 12,861.08 : x
  2. Step 2: Convert to fraction form
    22,421.69/30,939.23 = 12,861.08/x
  3. Step 3: Cross multiply
    22,421.69x = 30,939.23 × 12,861.08
  4. Step 4: Simplify right side
    22,421.69x = 397,911,693.17
  5. Step 5: Solve for x
    x = 397,911,693.17/22,421.69
  6. Step 6: Final answer
    x = 17,746.73

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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.