Home / 21,284.40-31,931.59-6,493.31

Finding the Fourth Proportional to 21,284.40, 31,931.59 and 6,493.31

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Solution

The fourth proportional to 21,284.40, 31,931.59 and 6,493.31 is: 9,741.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.40 : 31,931.59 = 6,493.31 : x
  2. Step 2: Convert to fraction form
    21,284.40/31,931.59 = 6,493.31/x
  3. Step 3: Cross multiply
    21,284.40x = 31,931.59 × 6,493.31
  4. Step 4: Simplify right side
    21,284.40x = 207,341,712.66
  5. Step 5: Solve for x
    x = 207,341,712.66/21,284.40
  6. Step 6: Final answer
    x = 9,741.49

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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.