Home / 14,172.78-19,557.90-7,885.02

Finding the Fourth Proportional to 14,172.78, 19,557.90 and 7,885.02

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Solution

The fourth proportional to 14,172.78, 19,557.90 and 7,885.02 is: 10,881.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,172.78 : 19,557.90 = 7,885.02 : x
  2. Step 2: Convert to fraction form
    14,172.78/19,557.90 = 7,885.02/x
  3. Step 3: Cross multiply
    14,172.78x = 19,557.90 × 7,885.02
  4. Step 4: Simplify right side
    14,172.78x = 154,214,432.66
  5. Step 5: Solve for x
    x = 154,214,432.66/14,172.78
  6. Step 6: Final answer
    x = 10,881.03

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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.