Home / 19,140.81-26,416.40-11,185.71

Finding the Fourth Proportional to 19,140.81, 26,416.40 and 11,185.71

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Solution

The fourth proportional to 19,140.81, 26,416.40 and 11,185.71 is: 15,437.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.81 : 26,416.40 = 11,185.71 : x
  2. Step 2: Convert to fraction form
    19,140.81/26,416.40 = 11,185.71/x
  3. Step 3: Cross multiply
    19,140.81x = 26,416.40 × 11,185.71
  4. Step 4: Simplify right side
    19,140.81x = 295,486,133.72
  5. Step 5: Solve for x
    x = 295,486,133.72/19,140.81
  6. Step 6: Final answer
    x = 15,437.49

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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.