Home / 21,216.11-29,302.83-14,130.23

Finding the Fourth Proportional to 21,216.11, 29,302.83 and 14,130.23

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Solution

The fourth proportional to 21,216.11, 29,302.83 and 14,130.23 is: 19,516.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.11 : 29,302.83 = 14,130.23 : x
  2. Step 2: Convert to fraction form
    21,216.11/29,302.83 = 14,130.23/x
  3. Step 3: Cross multiply
    21,216.11x = 29,302.83 × 14,130.23
  4. Step 4: Simplify right side
    21,216.11x = 414,055,581.04
  5. Step 5: Solve for x
    x = 414,055,581.04/21,216.11
  6. Step 6: Final answer
    x = 19,516.10

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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.