Home / 12,730.79-17,568.45-7,065.56

Finding the Fourth Proportional to 12,730.79, 17,568.45 and 7,065.56

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Solution

The fourth proportional to 12,730.79, 17,568.45 and 7,065.56 is: 9,750.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,730.79 : 17,568.45 = 7,065.56 : x
  2. Step 2: Convert to fraction form
    12,730.79/17,568.45 = 7,065.56/x
  3. Step 3: Cross multiply
    12,730.79x = 17,568.45 × 7,065.56
  4. Step 4: Simplify right side
    12,730.79x = 124,130,981.50
  5. Step 5: Solve for x
    x = 124,130,981.50/12,730.79
  6. Step 6: Final answer
    x = 9,750.45

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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.