Home / 14,072.80-19,420.56-7,785.52

Finding the Fourth Proportional to 14,072.80, 19,420.56 and 7,785.52

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Solution

The fourth proportional to 14,072.80, 19,420.56 and 7,785.52 is: 10,744.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,072.80 : 19,420.56 = 7,785.52 : x
  2. Step 2: Convert to fraction form
    14,072.80/19,420.56 = 7,785.52/x
  3. Step 3: Cross multiply
    14,072.80x = 19,420.56 × 7,785.52
  4. Step 4: Simplify right side
    14,072.80x = 151,199,158.29
  5. Step 5: Solve for x
    x = 151,199,158.29/14,072.80
  6. Step 6: Final answer
    x = 10,744.07

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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.