Home / 10,005.12-14,990.40-7,374.24

Finding the Fourth Proportional to 10,005.12, 14,990.40 and 7,374.24

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Solution

The fourth proportional to 10,005.12, 14,990.40 and 7,374.24 is: 11,048.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,005.12 : 14,990.40 = 7,374.24 : x
  2. Step 2: Convert to fraction form
    10,005.12/14,990.40 = 7,374.24/x
  3. Step 3: Cross multiply
    10,005.12x = 14,990.40 × 7,374.24
  4. Step 4: Simplify right side
    10,005.12x = 110,542,807.30
  5. Step 5: Solve for x
    x = 110,542,807.30/10,005.12
  6. Step 6: Final answer
    x = 11,048.62

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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.