Home / 14,319.63-21,470.81-6,420.72

Finding the Fourth Proportional to 14,319.63, 21,470.81 and 6,420.72

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Solution

The fourth proportional to 14,319.63, 21,470.81 and 6,420.72 is: 9,627.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,319.63 : 21,470.81 = 6,420.72 : x
  2. Step 2: Convert to fraction form
    14,319.63/21,470.81 = 6,420.72/x
  3. Step 3: Cross multiply
    14,319.63x = 21,470.81 × 6,420.72
  4. Step 4: Simplify right side
    14,319.63x = 137,858,027.08
  5. Step 5: Solve for x
    x = 137,858,027.08/14,319.63
  6. Step 6: Final answer
    x = 9,627.21

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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.