Home / 21,020.06-31,526.64-8,539.58

Finding the Fourth Proportional to 21,020.06, 31,526.64 and 8,539.58

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Solution

The fourth proportional to 21,020.06, 31,526.64 and 8,539.58 is: 12,807.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.06 : 31,526.64 = 8,539.58 : x
  2. Step 2: Convert to fraction form
    21,020.06/31,526.64 = 8,539.58/x
  3. Step 3: Cross multiply
    21,020.06x = 31,526.64 × 8,539.58
  4. Step 4: Simplify right side
    21,020.06x = 269,224,343.23
  5. Step 5: Solve for x
    x = 269,224,343.23/21,020.06
  6. Step 6: Final answer
    x = 12,807.97

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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.