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Finding the Fourth Proportional to 12,547.56, 17,315.70 and 6,958.56

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Solution

The fourth proportional to 12,547.56, 17,315.70 and 6,958.56 is: 9,602.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.56 : 17,315.70 = 6,958.56 : x
  2. Step 2: Convert to fraction form
    12,547.56/17,315.70 = 6,958.56/x
  3. Step 3: Cross multiply
    12,547.56x = 17,315.70 × 6,958.56
  4. Step 4: Simplify right side
    12,547.56x = 120,492,337.39
  5. Step 5: Solve for x
    x = 120,492,337.39/12,547.56
  6. Step 6: Final answer
    x = 9,602.85

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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.