Home / 12,742.40-19,113.60-9,826.40

Finding the Fourth Proportional to 12,742.40, 19,113.60 and 9,826.40

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Solution

The fourth proportional to 12,742.40, 19,113.60 and 9,826.40 is: 14,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.40 : 19,113.60 = 9,826.40 : x
  2. Step 2: Convert to fraction form
    12,742.40/19,113.60 = 9,826.40/x
  3. Step 3: Cross multiply
    12,742.40x = 19,113.60 × 9,826.40
  4. Step 4: Simplify right side
    12,742.40x = 187,817,879.04
  5. Step 5: Solve for x
    x = 187,817,879.04/12,742.40
  6. Step 6: Final answer
    x = 14,739.60

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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.