Home / 21,296.99-31,946.40-7,256.45

Finding the Fourth Proportional to 21,296.99, 31,946.40 and 7,256.45

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Solution

The fourth proportional to 21,296.99, 31,946.40 and 7,256.45 is: 10,884.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.99 : 31,946.40 = 7,256.45 : x
  2. Step 2: Convert to fraction form
    21,296.99/31,946.40 = 7,256.45/x
  3. Step 3: Cross multiply
    21,296.99x = 31,946.40 × 7,256.45
  4. Step 4: Simplify right side
    21,296.99x = 231,817,534.15
  5. Step 5: Solve for x
    x = 231,817,534.15/21,296.99
  6. Step 6: Final answer
    x = 10,884.99

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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.