Home / 19,681.06-27,299.04-18,971.78

Finding the Fourth Proportional to 19,681.06, 27,299.04 and 18,971.78

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Solution

The fourth proportional to 19,681.06, 27,299.04 and 18,971.78 is: 26,315.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.06 : 27,299.04 = 18,971.78 : x
  2. Step 2: Convert to fraction form
    19,681.06/27,299.04 = 18,971.78/x
  3. Step 3: Cross multiply
    19,681.06x = 27,299.04 × 18,971.78
  4. Step 4: Simplify right side
    19,681.06x = 517,911,381.09
  5. Step 5: Solve for x
    x = 517,911,381.09/19,681.06
  6. Step 6: Final answer
    x = 26,315.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.