Home / 21,916.07-30,236.78-12,477.95

Finding the Fourth Proportional to 21,916.07, 30,236.78 and 12,477.95

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Solution

The fourth proportional to 21,916.07, 30,236.78 and 12,477.95 is: 17,215.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,916.07 : 30,236.78 = 12,477.95 : x
  2. Step 2: Convert to fraction form
    21,916.07/30,236.78 = 12,477.95/x
  3. Step 3: Cross multiply
    21,916.07x = 30,236.78 × 12,477.95
  4. Step 4: Simplify right side
    21,916.07x = 377,292,909.01
  5. Step 5: Solve for x
    x = 377,292,909.01/21,916.07
  6. Step 6: Final answer
    x = 17,215.36

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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.