Home / 28,459.13-39,274.21-15,712.27

Finding the Fourth Proportional to 28,459.13, 39,274.21 and 15,712.27

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Solution

The fourth proportional to 28,459.13, 39,274.21 and 15,712.27 is: 21,683.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.13 : 39,274.21 = 15,712.27 : x
  2. Step 2: Convert to fraction form
    28,459.13/39,274.21 = 15,712.27/x
  3. Step 3: Cross multiply
    28,459.13x = 39,274.21 × 15,712.27
  4. Step 4: Simplify right side
    28,459.13x = 617,086,913.01
  5. Step 5: Solve for x
    x = 617,086,913.01/28,459.13
  6. Step 6: Final answer
    x = 21,683.27

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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.