Home / 21,306.49-31,959.59-6,515.35

Finding the Fourth Proportional to 21,306.49, 31,959.59 and 6,515.35

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Solution

The fourth proportional to 21,306.49, 31,959.59 and 6,515.35 is: 9,772.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.49 : 31,959.59 = 6,515.35 : x
  2. Step 2: Convert to fraction form
    21,306.49/31,959.59 = 6,515.35/x
  3. Step 3: Cross multiply
    21,306.49x = 31,959.59 × 6,515.35
  4. Step 4: Simplify right side
    21,306.49x = 208,227,802.23
  5. Step 5: Solve for x
    x = 208,227,802.23/21,306.49
  6. Step 6: Final answer
    x = 9,772.98

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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.