Home / 13,970.56-19,278.87-7,682.89

Finding the Fourth Proportional to 13,970.56, 19,278.87 and 7,682.89

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Solution

The fourth proportional to 13,970.56, 19,278.87 and 7,682.89 is: 10,602.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,970.56 : 19,278.87 = 7,682.89 : x
  2. Step 2: Convert to fraction form
    13,970.56/19,278.87 = 7,682.89/x
  3. Step 3: Cross multiply
    13,970.56x = 19,278.87 × 7,682.89
  4. Step 4: Simplify right side
    13,970.56x = 148,117,437.53
  5. Step 5: Solve for x
    x = 148,117,437.53/13,970.56
  6. Step 6: Final answer
    x = 10,602.11

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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.