Home / 28,328.32-39,088.56-16,392.16

Finding the Fourth Proportional to 28,328.32, 39,088.56 and 16,392.16

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Solution

The fourth proportional to 28,328.32, 39,088.56 and 16,392.16 is: 22,618.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.32 : 39,088.56 = 16,392.16 : x
  2. Step 2: Convert to fraction form
    28,328.32/39,088.56 = 16,392.16/x
  3. Step 3: Cross multiply
    28,328.32x = 39,088.56 × 16,392.16
  4. Step 4: Simplify right side
    28,328.32x = 640,745,929.69
  5. Step 5: Solve for x
    x = 640,745,929.69/28,328.32
  6. Step 6: Final answer
    x = 22,618.56

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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.