Home / 13,140.07-19,686.41-7,210.56

Finding the Fourth Proportional to 13,140.07, 19,686.41 and 7,210.56

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Solution

The fourth proportional to 13,140.07, 19,686.41 and 7,210.56 is: 10,802.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.07 : 19,686.41 = 7,210.56 : x
  2. Step 2: Convert to fraction form
    13,140.07/19,686.41 = 7,210.56/x
  3. Step 3: Cross multiply
    13,140.07x = 19,686.41 × 7,210.56
  4. Step 4: Simplify right side
    13,140.07x = 141,950,004.44
  5. Step 5: Solve for x
    x = 141,950,004.44/13,140.07
  6. Step 6: Final answer
    x = 10,802.84

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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.