Home / 18,915.67-28,353.80-10,583.47

Finding the Fourth Proportional to 18,915.67, 28,353.80 and 10,583.47

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Solution

The fourth proportional to 18,915.67, 28,353.80 and 10,583.47 is: 15,864.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.67 : 28,353.80 = 10,583.47 : x
  2. Step 2: Convert to fraction form
    18,915.67/28,353.80 = 10,583.47/x
  3. Step 3: Cross multiply
    18,915.67x = 28,353.80 × 10,583.47
  4. Step 4: Simplify right side
    18,915.67x = 300,081,538.77
  5. Step 5: Solve for x
    x = 300,081,538.77/18,915.67
  6. Step 6: Final answer
    x = 15,864.18

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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.