Home / 19,416.81-26,799.54-12,690.87

Finding the Fourth Proportional to 19,416.81, 26,799.54 and 12,690.87

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Solution

The fourth proportional to 19,416.81, 26,799.54 and 12,690.87 is: 17,516.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,416.81 : 26,799.54 = 12,690.87 : x
  2. Step 2: Convert to fraction form
    19,416.81/26,799.54 = 12,690.87/x
  3. Step 3: Cross multiply
    19,416.81x = 26,799.54 × 12,690.87
  4. Step 4: Simplify right side
    19,416.81x = 340,109,478.20
  5. Step 5: Solve for x
    x = 340,109,478.20/19,416.81
  6. Step 6: Final answer
    x = 17,516.24

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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.