Home / 21,140.55-31,707.27-7,098.99

Finding the Fourth Proportional to 21,140.55, 31,707.27 and 7,098.99

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Solution

The fourth proportional to 21,140.55, 31,707.27 and 7,098.99 is: 10,647.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.55 : 31,707.27 = 7,098.99 : x
  2. Step 2: Convert to fraction form
    21,140.55/31,707.27 = 7,098.99/x
  3. Step 3: Cross multiply
    21,140.55x = 31,707.27 × 7,098.99
  4. Step 4: Simplify right side
    21,140.55x = 225,089,592.66
  5. Step 5: Solve for x
    x = 225,089,592.66/21,140.55
  6. Step 6: Final answer
    x = 10,647.29

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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.