Home / 21,421.37-29,564.99-14,701.47

Finding the Fourth Proportional to 21,421.37, 29,564.99 and 14,701.47

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Solution

The fourth proportional to 21,421.37, 29,564.99 and 14,701.47 is: 20,290.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.37 : 29,564.99 = 14,701.47 : x
  2. Step 2: Convert to fraction form
    21,421.37/29,564.99 = 14,701.47/x
  3. Step 3: Cross multiply
    21,421.37x = 29,564.99 × 14,701.47
  4. Step 4: Simplify right side
    21,421.37x = 434,648,850.29
  5. Step 5: Solve for x
    x = 434,648,850.29/21,421.37
  6. Step 6: Final answer
    x = 20,290.44

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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.