Home / 28,365.08-39,143.47-15,617.99

Finding the Fourth Proportional to 28,365.08, 39,143.47 and 15,617.99

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Solution

The fourth proportional to 28,365.08, 39,143.47 and 15,617.99 is: 21,552.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.08 : 39,143.47 = 15,617.99 : x
  2. Step 2: Convert to fraction form
    28,365.08/39,143.47 = 15,617.99/x
  3. Step 3: Cross multiply
    28,365.08x = 39,143.47 × 15,617.99
  4. Step 4: Simplify right side
    28,365.08x = 611,342,088.26
  5. Step 5: Solve for x
    x = 611,342,088.26/28,365.08
  6. Step 6: Final answer
    x = 21,552.63

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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.