Home / 14,005.80-21,012.80-4,145.32

Finding the Fourth Proportional to 14,005.80, 21,012.80 and 4,145.32

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Solution

The fourth proportional to 14,005.80, 21,012.80 and 4,145.32 is: 6,219.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,005.80 : 21,012.80 = 4,145.32 : x
  2. Step 2: Convert to fraction form
    14,005.80/21,012.80 = 4,145.32/x
  3. Step 3: Cross multiply
    14,005.80x = 21,012.80 × 4,145.32
  4. Step 4: Simplify right side
    14,005.80x = 87,104,780.10
  5. Step 5: Solve for x
    x = 87,104,780.10/14,005.80
  6. Step 6: Final answer
    x = 6,219.19

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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.