Home / 21,513.24-29,688.39-11,953.14

Finding the Fourth Proportional to 21,513.24, 29,688.39 and 11,953.14

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Solution

The fourth proportional to 21,513.24, 29,688.39 and 11,953.14 is: 16,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,513.24 : 29,688.39 = 11,953.14 : x
  2. Step 2: Convert to fraction form
    21,513.24/29,688.39 = 11,953.14/x
  3. Step 3: Cross multiply
    21,513.24x = 29,688.39 × 11,953.14
  4. Step 4: Simplify right side
    21,513.24x = 354,869,482.04
  5. Step 5: Solve for x
    x = 354,869,482.04/21,513.24
  6. Step 6: Final answer
    x = 16,495.40

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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.