Home / 21,160.16-31,701-10,617.80

Finding the Fourth Proportional to 21,160.16, 31,701 and 10,617.80

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Solution

The fourth proportional to 21,160.16, 31,701 and 10,617.80 is: 15,907.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.16 : 31,701 = 10,617.80 : x
  2. Step 2: Convert to fraction form
    21,160.16/31,701 = 10,617.80/x
  3. Step 3: Cross multiply
    21,160.16x = 31,701 × 10,617.80
  4. Step 4: Simplify right side
    21,160.16x = 336,594,877.80
  5. Step 5: Solve for x
    x = 336,594,877.80/21,160.16
  6. Step 6: Final answer
    x = 15,907.01

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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.