Home / 21,028.84-31,541.10-6,989.80

Finding the Fourth Proportional to 21,028.84, 31,541.10 and 6,989.80

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Solution

The fourth proportional to 21,028.84, 31,541.10 and 6,989.80 is: 10,483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028.84 : 31,541.10 = 6,989.80 : x
  2. Step 2: Convert to fraction form
    21,028.84/31,541.10 = 6,989.80/x
  3. Step 3: Cross multiply
    21,028.84x = 31,541.10 × 6,989.80
  4. Step 4: Simplify right side
    21,028.84x = 220,465,980.78
  5. Step 5: Solve for x
    x = 220,465,980.78/21,028.84
  6. Step 6: Final answer
    x = 10,483.98

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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.