Home / 21,972.81-32,931.80-10,718.87

Finding the Fourth Proportional to 21,972.81, 32,931.80 and 10,718.87

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Solution

The fourth proportional to 21,972.81, 32,931.80 and 10,718.87 is: 16,064.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.81 : 32,931.80 = 10,718.87 : x
  2. Step 2: Convert to fraction form
    21,972.81/32,931.80 = 10,718.87/x
  3. Step 3: Cross multiply
    21,972.81x = 32,931.80 × 10,718.87
  4. Step 4: Simplify right side
    21,972.81x = 352,991,683.07
  5. Step 5: Solve for x
    x = 352,991,683.07/21,972.81
  6. Step 6: Final answer
    x = 16,064.93

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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.