Home / 20,498.76-30,678.64-12,606.24

Finding the Fourth Proportional to 20,498.76, 30,678.64 and 12,606.24

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Solution

The fourth proportional to 20,498.76, 30,678.64 and 12,606.24 is: 18,866.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.76 : 30,678.64 = 12,606.24 : x
  2. Step 2: Convert to fraction form
    20,498.76/30,678.64 = 12,606.24/x
  3. Step 3: Cross multiply
    20,498.76x = 30,678.64 × 12,606.24
  4. Step 4: Simplify right side
    20,498.76x = 386,742,298.71
  5. Step 5: Solve for x
    x = 386,742,298.71/20,498.76
  6. Step 6: Final answer
    x = 18,866.62

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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.