Home / 18,390.18-25,378.47-10,006.50

Finding the Fourth Proportional to 18,390.18, 25,378.47 and 10,006.50

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Solution

The fourth proportional to 18,390.18, 25,378.47 and 10,006.50 is: 13,808.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.18 : 25,378.47 = 10,006.50 : x
  2. Step 2: Convert to fraction form
    18,390.18/25,378.47 = 10,006.50/x
  3. Step 3: Cross multiply
    18,390.18x = 25,378.47 × 10,006.50
  4. Step 4: Simplify right side
    18,390.18x = 253,949,660.06
  5. Step 5: Solve for x
    x = 253,949,660.06/18,390.18
  6. Step 6: Final answer
    x = 13,808.98

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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.