Home / 13,970.12-19,278.96-7,682.64

Finding the Fourth Proportional to 13,970.12, 19,278.96 and 7,682.64

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Solution

The fourth proportional to 13,970.12, 19,278.96 and 7,682.64 is: 10,602.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,970.12 : 19,278.96 = 7,682.64 : x
  2. Step 2: Convert to fraction form
    13,970.12/19,278.96 = 7,682.64/x
  3. Step 3: Cross multiply
    13,970.12x = 19,278.96 × 7,682.64
  4. Step 4: Simplify right side
    13,970.12x = 148,113,309.25
  5. Step 5: Solve for x
    x = 148,113,309.25/13,970.12
  6. Step 6: Final answer
    x = 10,602.15

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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.