Home / 10,812.02-14,898.45-7,974.90

Finding the Fourth Proportional to 10,812.02, 14,898.45 and 7,974.90

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Solution

The fourth proportional to 10,812.02, 14,898.45 and 7,974.90 is: 10,989.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.02 : 14,898.45 = 7,974.90 : x
  2. Step 2: Convert to fraction form
    10,812.02/14,898.45 = 7,974.90/x
  3. Step 3: Cross multiply
    10,812.02x = 14,898.45 × 7,974.90
  4. Step 4: Simplify right side
    10,812.02x = 118,813,633.95
  5. Step 5: Solve for x
    x = 118,813,633.95/10,812.02
  6. Step 6: Final answer
    x = 10,989.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.