Home / 14,709.48-20,298.60-8,420.64

Finding the Fourth Proportional to 14,709.48, 20,298.60 and 8,420.64

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Solution

The fourth proportional to 14,709.48, 20,298.60 and 8,420.64 is: 11,620.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,709.48 : 20,298.60 = 8,420.64 : x
  2. Step 2: Convert to fraction form
    14,709.48/20,298.60 = 8,420.64/x
  3. Step 3: Cross multiply
    14,709.48x = 20,298.60 × 8,420.64
  4. Step 4: Simplify right side
    14,709.48x = 170,927,203.10
  5. Step 5: Solve for x
    x = 170,927,203.10/14,709.48
  6. Step 6: Final answer
    x = 11,620.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.