Home / 9,424.12-12,990.40-7,529.74

Finding the Fourth Proportional to 9,424.12, 12,990.40 and 7,529.74

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Solution

The fourth proportional to 9,424.12, 12,990.40 and 7,529.74 is: 10,379.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,424.12 : 12,990.40 = 7,529.74 : x
  2. Step 2: Convert to fraction form
    9,424.12/12,990.40 = 7,529.74/x
  3. Step 3: Cross multiply
    9,424.12x = 12,990.40 × 7,529.74
  4. Step 4: Simplify right side
    9,424.12x = 97,814,334.50
  5. Step 5: Solve for x
    x = 97,814,334.50/9,424.12
  6. Step 6: Final answer
    x = 10,379.15

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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.