Home / 12,762.10-17,610.45-7,172.98

Finding the Fourth Proportional to 12,762.10, 17,610.45 and 7,172.98

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Solution

The fourth proportional to 12,762.10, 17,610.45 and 7,172.98 is: 9,898.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,762.10 : 17,610.45 = 7,172.98 : x
  2. Step 2: Convert to fraction form
    12,762.10/17,610.45 = 7,172.98/x
  3. Step 3: Cross multiply
    12,762.10x = 17,610.45 × 7,172.98
  4. Step 4: Simplify right side
    12,762.10x = 126,319,405.64
  5. Step 5: Solve for x
    x = 126,319,405.64/12,762.10
  6. Step 6: Final answer
    x = 9,898.01

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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.