Home / 15,431.35-23,128.40-7,099.94

Finding the Fourth Proportional to 15,431.35, 23,128.40 and 7,099.94

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Solution

The fourth proportional to 15,431.35, 23,128.40 and 7,099.94 is: 10,641.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,431.35 : 23,128.40 = 7,099.94 : x
  2. Step 2: Convert to fraction form
    15,431.35/23,128.40 = 7,099.94/x
  3. Step 3: Cross multiply
    15,431.35x = 23,128.40 × 7,099.94
  4. Step 4: Simplify right side
    15,431.35x = 164,210,252.30
  5. Step 5: Solve for x
    x = 164,210,252.30/15,431.35
  6. Step 6: Final answer
    x = 10,641.34

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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.