Home / 12,955.28-17,878.58-7,651.40

Finding the Fourth Proportional to 12,955.28, 17,878.58 and 7,651.40

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Solution

The fourth proportional to 12,955.28, 17,878.58 and 7,651.40 is: 10,559.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.28 : 17,878.58 = 7,651.40 : x
  2. Step 2: Convert to fraction form
    12,955.28/17,878.58 = 7,651.40/x
  3. Step 3: Cross multiply
    12,955.28x = 17,878.58 × 7,651.40
  4. Step 4: Simplify right side
    12,955.28x = 136,796,167.01
  5. Step 5: Solve for x
    x = 136,796,167.01/12,955.28
  6. Step 6: Final answer
    x = 10,559.11

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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.