Home / 12,789.20-19,162.68-5,848.40

Finding the Fourth Proportional to 12,789.20, 19,162.68 and 5,848.40

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Solution

The fourth proportional to 12,789.20, 19,162.68 and 5,848.40 is: 8,762.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.20 : 19,162.68 = 5,848.40 : x
  2. Step 2: Convert to fraction form
    12,789.20/19,162.68 = 5,848.40/x
  3. Step 3: Cross multiply
    12,789.20x = 19,162.68 × 5,848.40
  4. Step 4: Simplify right side
    12,789.20x = 112,071,017.71
  5. Step 5: Solve for x
    x = 112,071,017.71/12,789.20
  6. Step 6: Final answer
    x = 8,762.94

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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.