Home / 21,395.81-29,526.32-11,964.38

Finding the Fourth Proportional to 21,395.81, 29,526.32 and 11,964.38

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Solution

The fourth proportional to 21,395.81, 29,526.32 and 11,964.38 is: 16,510.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,395.81 : 29,526.32 = 11,964.38 : x
  2. Step 2: Convert to fraction form
    21,395.81/29,526.32 = 11,964.38/x
  3. Step 3: Cross multiply
    21,395.81x = 29,526.32 × 11,964.38
  4. Step 4: Simplify right side
    21,395.81x = 353,263,994.76
  5. Step 5: Solve for x
    x = 353,263,994.76/21,395.81
  6. Step 6: Final answer
    x = 16,510.89

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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.