Home / 21,056.48-31,576.65-7,013.81

Finding the Fourth Proportional to 21,056.48, 31,576.65 and 7,013.81

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Solution

The fourth proportional to 21,056.48, 31,576.65 and 7,013.81 is: 10,518.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.48 : 31,576.65 = 7,013.81 : x
  2. Step 2: Convert to fraction form
    21,056.48/31,576.65 = 7,013.81/x
  3. Step 3: Cross multiply
    21,056.48x = 31,576.65 × 7,013.81
  4. Step 4: Simplify right side
    21,056.48x = 221,472,465.65
  5. Step 5: Solve for x
    x = 221,472,465.65/21,056.48
  6. Step 6: Final answer
    x = 10,518.02

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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.