Home / 12,529.31-18,777.56-5,125.32

Finding the Fourth Proportional to 12,529.31, 18,777.56 and 5,125.32

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Solution

The fourth proportional to 12,529.31, 18,777.56 and 5,125.32 is: 7,681.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,529.31 : 18,777.56 = 5,125.32 : x
  2. Step 2: Convert to fraction form
    12,529.31/18,777.56 = 5,125.32/x
  3. Step 3: Cross multiply
    12,529.31x = 18,777.56 × 5,125.32
  4. Step 4: Simplify right side
    12,529.31x = 96,240,978.19
  5. Step 5: Solve for x
    x = 96,240,978.19/12,529.31
  6. Step 6: Final answer
    x = 7,681.27

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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.