Home / 18,787.32-25,926.80-10,289.28

Finding the Fourth Proportional to 18,787.32, 25,926.80 and 10,289.28

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Solution

The fourth proportional to 18,787.32, 25,926.80 and 10,289.28 is: 14,199.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.32 : 25,926.80 = 10,289.28 : x
  2. Step 2: Convert to fraction form
    18,787.32/25,926.80 = 10,289.28/x
  3. Step 3: Cross multiply
    18,787.32x = 25,926.80 × 10,289.28
  4. Step 4: Simplify right side
    18,787.32x = 266,768,053.26
  5. Step 5: Solve for x
    x = 266,768,053.26/18,787.32
  6. Step 6: Final answer
    x = 14,199.37

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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.