Home / 28,011.34-38,653.36-15,436.09

Finding the Fourth Proportional to 28,011.34, 38,653.36 and 15,436.09

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Solution

The fourth proportional to 28,011.34, 38,653.36 and 15,436.09 is: 21,300.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.34 : 38,653.36 = 15,436.09 : x
  2. Step 2: Convert to fraction form
    28,011.34/38,653.36 = 15,436.09/x
  3. Step 3: Cross multiply
    28,011.34x = 38,653.36 × 15,436.09
  4. Step 4: Simplify right side
    28,011.34x = 596,656,743.76
  5. Step 5: Solve for x
    x = 596,656,743.76/28,011.34
  6. Step 6: Final answer
    x = 21,300.54

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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.