Home / 12,287.12-18,430.80-3,053.12

Finding the Fourth Proportional to 12,287.12, 18,430.80 and 3,053.12

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Solution

The fourth proportional to 12,287.12, 18,430.80 and 3,053.12 is: 4,579.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.12 : 18,430.80 = 3,053.12 : x
  2. Step 2: Convert to fraction form
    12,287.12/18,430.80 = 3,053.12/x
  3. Step 3: Cross multiply
    12,287.12x = 18,430.80 × 3,053.12
  4. Step 4: Simplify right side
    12,287.12x = 56,271,444.10
  5. Step 5: Solve for x
    x = 56,271,444.10/12,287.12
  6. Step 6: Final answer
    x = 4,579.71

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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.