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Finding the Fourth Proportional to 19,484.79, 26,892.51 and 10,989.51

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Solution

The fourth proportional to 19,484.79, 26,892.51 and 10,989.51 is: 15,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,484.79 : 26,892.51 = 10,989.51 : x
  2. Step 2: Convert to fraction form
    19,484.79/26,892.51 = 10,989.51/x
  3. Step 3: Cross multiply
    19,484.79x = 26,892.51 × 10,989.51
  4. Step 4: Simplify right side
    19,484.79x = 295,535,507.57
  5. Step 5: Solve for x
    x = 295,535,507.57/19,484.79
  6. Step 6: Final answer
    x = 15,167.50

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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.