Home / 22,946.90-31,668.35-12,738.47

Finding the Fourth Proportional to 22,946.90, 31,668.35 and 12,738.47

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Solution

The fourth proportional to 22,946.90, 31,668.35 and 12,738.47 is: 17,579.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,946.90 : 31,668.35 = 12,738.47 : x
  2. Step 2: Convert to fraction form
    22,946.90/31,668.35 = 12,738.47/x
  3. Step 3: Cross multiply
    22,946.90x = 31,668.35 × 12,738.47
  4. Step 4: Simplify right side
    22,946.90x = 403,406,104.39
  5. Step 5: Solve for x
    x = 403,406,104.39/22,946.90
  6. Step 6: Final answer
    x = 17,579.99

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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.