Home / 30,005.06-45,005.75-12,475.04

Finding the Fourth Proportional to 30,005.06, 45,005.75 and 12,475.04

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Solution

The fourth proportional to 30,005.06, 45,005.75 and 12,475.04 is: 18,711.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,005.06 : 45,005.75 = 12,475.04 : x
  2. Step 2: Convert to fraction form
    30,005.06/45,005.75 = 12,475.04/x
  3. Step 3: Cross multiply
    30,005.06x = 45,005.75 × 12,475.04
  4. Step 4: Simplify right side
    30,005.06x = 561,448,531.48
  5. Step 5: Solve for x
    x = 561,448,531.48/30,005.06
  6. Step 6: Final answer
    x = 18,711.79

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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.