Home / 15,283.69-21,071.75-9,896.55

Finding the Fourth Proportional to 15,283.69, 21,071.75 and 9,896.55

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Solution

The fourth proportional to 15,283.69, 21,071.75 and 9,896.55 is: 13,644.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,283.69 : 21,071.75 = 9,896.55 : x
  2. Step 2: Convert to fraction form
    15,283.69/21,071.75 = 9,896.55/x
  3. Step 3: Cross multiply
    15,283.69x = 21,071.75 × 9,896.55
  4. Step 4: Simplify right side
    15,283.69x = 208,537,498.96
  5. Step 5: Solve for x
    x = 208,537,498.96/15,283.69
  6. Step 6: Final answer
    x = 13,644.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.