Home / 12,748.23-19,100.77-7,807.55

Finding the Fourth Proportional to 12,748.23, 19,100.77 and 7,807.55

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Solution

The fourth proportional to 12,748.23, 19,100.77 and 7,807.55 is: 11,698.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748.23 : 19,100.77 = 7,807.55 : x
  2. Step 2: Convert to fraction form
    12,748.23/19,100.77 = 7,807.55/x
  3. Step 3: Cross multiply
    12,748.23x = 19,100.77 × 7,807.55
  4. Step 4: Simplify right side
    12,748.23x = 149,130,216.81
  5. Step 5: Solve for x
    x = 149,130,216.81/12,748.23
  6. Step 6: Final answer
    x = 11,698.11

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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.