Home / 21,942.36-30,280.32-12,510.81

Finding the Fourth Proportional to 21,942.36, 30,280.32 and 12,510.81

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Solution

The fourth proportional to 21,942.36, 30,280.32 and 12,510.81 is: 17,264.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,942.36 : 30,280.32 = 12,510.81 : x
  2. Step 2: Convert to fraction form
    21,942.36/30,280.32 = 12,510.81/x
  3. Step 3: Cross multiply
    21,942.36x = 30,280.32 × 12,510.81
  4. Step 4: Simplify right side
    21,942.36x = 378,831,330.26
  5. Step 5: Solve for x
    x = 378,831,330.26/21,942.36
  6. Step 6: Final answer
    x = 17,264.84

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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.