Home / 15,583.51-21,501.21-9,915.94

Finding the Fourth Proportional to 15,583.51, 21,501.21 and 9,915.94

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Solution

The fourth proportional to 15,583.51, 21,501.21 and 9,915.94 is: 13,681.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,583.51 : 21,501.21 = 9,915.94 : x
  2. Step 2: Convert to fraction form
    15,583.51/21,501.21 = 9,915.94/x
  3. Step 3: Cross multiply
    15,583.51x = 21,501.21 × 9,915.94
  4. Step 4: Simplify right side
    15,583.51x = 213,204,708.29
  5. Step 5: Solve for x
    x = 213,204,708.29/15,583.51
  6. Step 6: Final answer
    x = 13,681.43

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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.