Home / 20,726.16-31,088.40-6,685.60

Finding the Fourth Proportional to 20,726.16, 31,088.40 and 6,685.60

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Solution

The fourth proportional to 20,726.16, 31,088.40 and 6,685.60 is: 10,028.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.16 : 31,088.40 = 6,685.60 : x
  2. Step 2: Convert to fraction form
    20,726.16/31,088.40 = 6,685.60/x
  3. Step 3: Cross multiply
    20,726.16x = 31,088.40 × 6,685.60
  4. Step 4: Simplify right side
    20,726.16x = 207,844,607.04
  5. Step 5: Solve for x
    x = 207,844,607.04/20,726.16
  6. Step 6: Final answer
    x = 10,028.13

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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.