Home / 12,621.72-17,417.58-6,956.28

Finding the Fourth Proportional to 12,621.72, 17,417.58 and 6,956.28

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Solution

The fourth proportional to 12,621.72, 17,417.58 and 6,956.28 is: 9,599.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.72 : 17,417.58 = 6,956.28 : x
  2. Step 2: Convert to fraction form
    12,621.72/17,417.58 = 6,956.28/x
  3. Step 3: Cross multiply
    12,621.72x = 17,417.58 × 6,956.28
  4. Step 4: Simplify right side
    12,621.72x = 121,161,563.40
  5. Step 5: Solve for x
    x = 121,161,563.40/12,621.72
  6. Step 6: Final answer
    x = 9,599.45

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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.