Home / 19,111.32-26,356.08-12,389.88

Finding the Fourth Proportional to 19,111.32, 26,356.08 and 12,389.88

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Solution

The fourth proportional to 19,111.32, 26,356.08 and 12,389.88 is: 17,086.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.32 : 26,356.08 = 12,389.88 : x
  2. Step 2: Convert to fraction form
    19,111.32/26,356.08 = 12,389.88/x
  3. Step 3: Cross multiply
    19,111.32x = 26,356.08 × 12,389.88
  4. Step 4: Simplify right side
    19,111.32x = 326,548,668.47
  5. Step 5: Solve for x
    x = 326,548,668.47/19,111.32
  6. Step 6: Final answer
    x = 17,086.66

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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.