Home / 15,399.40-23,109.90-9,866.20

Finding the Fourth Proportional to 15,399.40, 23,109.90 and 9,866.20

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Solution

The fourth proportional to 15,399.40, 23,109.90 and 9,866.20 is: 14,806.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,399.40 : 23,109.90 = 9,866.20 : x
  2. Step 2: Convert to fraction form
    15,399.40/23,109.90 = 9,866.20/x
  3. Step 3: Cross multiply
    15,399.40x = 23,109.90 × 9,866.20
  4. Step 4: Simplify right side
    15,399.40x = 228,006,895.38
  5. Step 5: Solve for x
    x = 228,006,895.38/15,399.40
  6. Step 6: Final answer
    x = 14,806.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.