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Finding the Fourth Proportional to 18,865, 26,031.06 and 10,904.32

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Solution

The fourth proportional to 18,865, 26,031.06 and 10,904.32 is: 15,046.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865 : 26,031.06 = 10,904.32 : x
  2. Step 2: Convert to fraction form
    18,865/26,031.06 = 10,904.32/x
  3. Step 3: Cross multiply
    18,865x = 26,031.06 × 10,904.32
  4. Step 4: Simplify right side
    18,865x = 283,851,008.18
  5. Step 5: Solve for x
    x = 283,851,008.18/18,865
  6. Step 6: Final answer
    x = 15,046.44

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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.