Home / 28,364.64-39,137.28-16,423.68

Finding the Fourth Proportional to 28,364.64, 39,137.28 and 16,423.68

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Solution

The fourth proportional to 28,364.64, 39,137.28 and 16,423.68 is: 22,661.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.64 : 39,137.28 = 16,423.68 : x
  2. Step 2: Convert to fraction form
    28,364.64/39,137.28 = 16,423.68/x
  3. Step 3: Cross multiply
    28,364.64x = 39,137.28 × 16,423.68
  4. Step 4: Simplify right side
    28,364.64x = 642,778,162.79
  5. Step 5: Solve for x
    x = 642,778,162.79/28,364.64
  6. Step 6: Final answer
    x = 22,661.25

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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.