Home / 21,140.02-31,710.01-8,660.07

Finding the Fourth Proportional to 21,140.02, 31,710.01 and 8,660.07

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Solution

The fourth proportional to 21,140.02, 31,710.01 and 8,660.07 is: 12,990.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.02 : 31,710.01 = 8,660.07 : x
  2. Step 2: Convert to fraction form
    21,140.02/31,710.01 = 8,660.07/x
  3. Step 3: Cross multiply
    21,140.02x = 31,710.01 × 8,660.07
  4. Step 4: Simplify right side
    21,140.02x = 274,610,704.45
  5. Step 5: Solve for x
    x = 274,610,704.45/21,140.02
  6. Step 6: Final answer
    x = 12,990.09

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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.