Home / 21,307.32-31,959.66-6,515.07

Finding the Fourth Proportional to 21,307.32, 31,959.66 and 6,515.07

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Solution

The fourth proportional to 21,307.32, 31,959.66 and 6,515.07 is: 9,772.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.32 : 31,959.66 = 6,515.07 : x
  2. Step 2: Convert to fraction form
    21,307.32/31,959.66 = 6,515.07/x
  3. Step 3: Cross multiply
    21,307.32x = 31,959.66 × 6,515.07
  4. Step 4: Simplify right side
    21,307.32x = 208,219,422.08
  5. Step 5: Solve for x
    x = 208,219,422.08/21,307.32
  6. Step 6: Final answer
    x = 9,772.20

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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.