Home / 14,208.30-21,312.45-7,209.90

Finding the Fourth Proportional to 14,208.30, 21,312.45 and 7,209.90

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Solution

The fourth proportional to 14,208.30, 21,312.45 and 7,209.90 is: 10,814.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,208.30 : 21,312.45 = 7,209.90 : x
  2. Step 2: Convert to fraction form
    14,208.30/21,312.45 = 7,209.90/x
  3. Step 3: Cross multiply
    14,208.30x = 21,312.45 × 7,209.90
  4. Step 4: Simplify right side
    14,208.30x = 153,660,633.26
  5. Step 5: Solve for x
    x = 153,660,633.26/14,208.30
  6. Step 6: Final answer
    x = 10,814.85

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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.