Home / 21,320.23-31,980.43-6,529.09

Finding the Fourth Proportional to 21,320.23, 31,980.43 and 6,529.09

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Solution

The fourth proportional to 21,320.23, 31,980.43 and 6,529.09 is: 9,793.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.23 : 31,980.43 = 6,529.09 : x
  2. Step 2: Convert to fraction form
    21,320.23/31,980.43 = 6,529.09/x
  3. Step 3: Cross multiply
    21,320.23x = 31,980.43 × 6,529.09
  4. Step 4: Simplify right side
    21,320.23x = 208,803,073.06
  5. Step 5: Solve for x
    x = 208,803,073.06/21,320.23
  6. Step 6: Final answer
    x = 9,793.66

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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.