Home / 13,970.31-19,281-8,666.83

Finding the Fourth Proportional to 13,970.31, 19,281 and 8,666.83

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Solution

The fourth proportional to 13,970.31, 19,281 and 8,666.83 is: 11,961.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,970.31 : 19,281 = 8,666.83 : x
  2. Step 2: Convert to fraction form
    13,970.31/19,281 = 8,666.83/x
  3. Step 3: Cross multiply
    13,970.31x = 19,281 × 8,666.83
  4. Step 4: Simplify right side
    13,970.31x = 167,105,149.23
  5. Step 5: Solve for x
    x = 167,105,149.23/13,970.31
  6. Step 6: Final answer
    x = 11,961.45

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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.