Home / 21,130.02-31,689.27-7,090.56

Finding the Fourth Proportional to 21,130.02, 31,689.27 and 7,090.56

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Solution

The fourth proportional to 21,130.02, 31,689.27 and 7,090.56 is: 10,633.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.02 : 31,689.27 = 7,090.56 : x
  2. Step 2: Convert to fraction form
    21,130.02/31,689.27 = 7,090.56/x
  3. Step 3: Cross multiply
    21,130.02x = 31,689.27 × 7,090.56
  4. Step 4: Simplify right side
    21,130.02x = 224,694,670.29
  5. Step 5: Solve for x
    x = 224,694,670.29/21,130.02
  6. Step 6: Final answer
    x = 10,633.91

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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.