Home / 28,718.07-39,631.05-16,142.01

Finding the Fourth Proportional to 28,718.07, 39,631.05 and 16,142.01

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Solution

The fourth proportional to 28,718.07, 39,631.05 and 16,142.01 is: 22,276.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.07 : 39,631.05 = 16,142.01 : x
  2. Step 2: Convert to fraction form
    28,718.07/39,631.05 = 16,142.01/x
  3. Step 3: Cross multiply
    28,718.07x = 39,631.05 × 16,142.01
  4. Step 4: Simplify right side
    28,718.07x = 639,724,805.41
  5. Step 5: Solve for x
    x = 639,724,805.41/28,718.07
  6. Step 6: Final answer
    x = 22,276.04

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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.