Home / 28,068.96-38,718.36-20,506.05

Finding the Fourth Proportional to 28,068.96, 38,718.36 and 20,506.05

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Solution

The fourth proportional to 28,068.96, 38,718.36 and 20,506.05 is: 28,286.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,068.96 : 38,718.36 = 20,506.05 : x
  2. Step 2: Convert to fraction form
    28,068.96/38,718.36 = 20,506.05/x
  3. Step 3: Cross multiply
    28,068.96x = 38,718.36 × 20,506.05
  4. Step 4: Simplify right side
    28,068.96x = 793,960,626.08
  5. Step 5: Solve for x
    x = 793,960,626.08/28,068.96
  6. Step 6: Final answer
    x = 28,286.07

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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.