Home / 14,278.47-21,417.09-3,890.22

Finding the Fourth Proportional to 14,278.47, 21,417.09 and 3,890.22

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Solution

The fourth proportional to 14,278.47, 21,417.09 and 3,890.22 is: 5,835.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.47 : 21,417.09 = 3,890.22 : x
  2. Step 2: Convert to fraction form
    14,278.47/21,417.09 = 3,890.22/x
  3. Step 3: Cross multiply
    14,278.47x = 21,417.09 × 3,890.22
  4. Step 4: Simplify right side
    14,278.47x = 83,317,191.86
  5. Step 5: Solve for x
    x = 83,317,191.86/14,278.47
  6. Step 6: Final answer
    x = 5,835.16

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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.