Home / 21,428.36-29,567.61-13,464.94

Finding the Fourth Proportional to 21,428.36, 29,567.61 and 13,464.94

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Solution

The fourth proportional to 21,428.36, 29,567.61 and 13,464.94 is: 18,579.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.36 : 29,567.61 = 13,464.94 : x
  2. Step 2: Convert to fraction form
    21,428.36/29,567.61 = 13,464.94/x
  3. Step 3: Cross multiply
    21,428.36x = 29,567.61 × 13,464.94
  4. Step 4: Simplify right side
    21,428.36x = 398,126,094.59
  5. Step 5: Solve for x
    x = 398,126,094.59/21,428.36
  6. Step 6: Final answer
    x = 18,579.40

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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.