Home / 28,718.94-39,632.18-15,971.86

Finding the Fourth Proportional to 28,718.94, 39,632.18 and 15,971.86

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Solution

The fourth proportional to 28,718.94, 39,632.18 and 15,971.86 is: 22,041.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.94 : 39,632.18 = 15,971.86 : x
  2. Step 2: Convert to fraction form
    28,718.94/39,632.18 = 15,971.86/x
  3. Step 3: Cross multiply
    28,718.94x = 39,632.18 × 15,971.86
  4. Step 4: Simplify right side
    28,718.94x = 632,999,630.45
  5. Step 5: Solve for x
    x = 632,999,630.45/28,718.94
  6. Step 6: Final answer
    x = 22,041.19

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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.