Home / 14,009.80-21,014.70-4,148.20

Finding the Fourth Proportional to 14,009.80, 21,014.70 and 4,148.20

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Solution

The fourth proportional to 14,009.80, 21,014.70 and 4,148.20 is: 6,222.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.80 : 21,014.70 = 4,148.20 : x
  2. Step 2: Convert to fraction form
    14,009.80/21,014.70 = 4,148.20/x
  3. Step 3: Cross multiply
    14,009.80x = 21,014.70 × 4,148.20
  4. Step 4: Simplify right side
    14,009.80x = 87,173,178.54
  5. Step 5: Solve for x
    x = 87,173,178.54/14,009.80
  6. Step 6: Final answer
    x = 6,222.30

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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.