Home / 12,870.62-19,270.82-9,741.16

Finding the Fourth Proportional to 12,870.62, 19,270.82 and 9,741.16

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Solution

The fourth proportional to 12,870.62, 19,270.82 and 9,741.16 is: 14,585.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,870.62 : 19,270.82 = 9,741.16 : x
  2. Step 2: Convert to fraction form
    12,870.62/19,270.82 = 9,741.16/x
  3. Step 3: Cross multiply
    12,870.62x = 19,270.82 × 9,741.16
  4. Step 4: Simplify right side
    12,870.62x = 187,720,068.16
  5. Step 5: Solve for x
    x = 187,720,068.16/12,870.62
  6. Step 6: Final answer
    x = 14,585.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.