Home / 10,381.45-14,322.04-7,239.46

Finding the Fourth Proportional to 10,381.45, 14,322.04 and 7,239.46

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Solution

The fourth proportional to 10,381.45, 14,322.04 and 7,239.46 is: 9,987.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.45 : 14,322.04 = 7,239.46 : x
  2. Step 2: Convert to fraction form
    10,381.45/14,322.04 = 7,239.46/x
  3. Step 3: Cross multiply
    10,381.45x = 14,322.04 × 7,239.46
  4. Step 4: Simplify right side
    10,381.45x = 103,683,835.70
  5. Step 5: Solve for x
    x = 103,683,835.70/10,381.45
  6. Step 6: Final answer
    x = 9,987.41

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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.