Home / 14,002.40-21,005.88-4,142.68

Finding the Fourth Proportional to 14,002.40, 21,005.88 and 4,142.68

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Solution

The fourth proportional to 14,002.40, 21,005.88 and 4,142.68 is: 6,214.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,002.40 : 21,005.88 = 4,142.68 : x
  2. Step 2: Convert to fraction form
    14,002.40/21,005.88 = 4,142.68/x
  3. Step 3: Cross multiply
    14,002.40x = 21,005.88 × 4,142.68
  4. Step 4: Simplify right side
    14,002.40x = 87,020,638.96
  5. Step 5: Solve for x
    x = 87,020,638.96/14,002.40
  6. Step 6: Final answer
    x = 6,214.69

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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.