Home / 28,572.48-39,429.12-15,826.08

Finding the Fourth Proportional to 28,572.48, 39,429.12 and 15,826.08

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Solution

The fourth proportional to 28,572.48, 39,429.12 and 15,826.08 is: 21,839.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572.48 : 39,429.12 = 15,826.08 : x
  2. Step 2: Convert to fraction form
    28,572.48/39,429.12 = 15,826.08/x
  3. Step 3: Cross multiply
    28,572.48x = 39,429.12 × 15,826.08
  4. Step 4: Simplify right side
    28,572.48x = 624,008,407.45
  5. Step 5: Solve for x
    x = 624,008,407.45/28,572.48
  6. Step 6: Final answer
    x = 21,839.49

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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.