Home / 20,937.84-31,411.35-6,897.30

Finding the Fourth Proportional to 20,937.84, 31,411.35 and 6,897.30

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Solution

The fourth proportional to 20,937.84, 31,411.35 and 6,897.30 is: 10,347.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.84 : 31,411.35 = 6,897.30 : x
  2. Step 2: Convert to fraction form
    20,937.84/31,411.35 = 6,897.30/x
  3. Step 3: Cross multiply
    20,937.84x = 31,411.35 × 6,897.30
  4. Step 4: Simplify right side
    20,937.84x = 216,653,504.36
  5. Step 5: Solve for x
    x = 216,653,504.36/20,937.84
  6. Step 6: Final answer
    x = 10,347.46

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1.5x scale

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.