Home / 14,289.06-21,508.10-12,930.68

Finding the Fourth Proportional to 14,289.06, 21,508.10 and 12,930.68

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Solution

The fourth proportional to 14,289.06, 21,508.10 and 12,930.68 is: 19,463.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.06 : 21,508.10 = 12,930.68 : x
  2. Step 2: Convert to fraction form
    14,289.06/21,508.10 = 12,930.68/x
  3. Step 3: Cross multiply
    14,289.06x = 21,508.10 × 12,930.68
  4. Step 4: Simplify right side
    14,289.06x = 278,114,358.51
  5. Step 5: Solve for x
    x = 278,114,358.51/14,289.06
  6. Step 6: Final answer
    x = 19,463.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.