Home / 14,878.08-20,486.52-12,888.72

Finding the Fourth Proportional to 14,878.08, 20,486.52 and 12,888.72

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Solution

The fourth proportional to 14,878.08, 20,486.52 and 12,888.72 is: 17,747.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,878.08 : 20,486.52 = 12,888.72 : x
  2. Step 2: Convert to fraction form
    14,878.08/20,486.52 = 12,888.72/x
  3. Step 3: Cross multiply
    14,878.08x = 20,486.52 × 12,888.72
  4. Step 4: Simplify right side
    14,878.08x = 264,045,020.05
  5. Step 5: Solve for x
    x = 264,045,020.05/14,878.08
  6. Step 6: Final answer
    x = 17,747.25

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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.