Home / 28,364.39-39,141.33-15,615.09

Finding the Fourth Proportional to 28,364.39, 39,141.33 and 15,615.09

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Solution

The fourth proportional to 28,364.39, 39,141.33 and 15,615.09 is: 21,547.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.39 : 39,141.33 = 15,615.09 : x
  2. Step 2: Convert to fraction form
    28,364.39/39,141.33 = 15,615.09/x
  3. Step 3: Cross multiply
    28,364.39x = 39,141.33 × 15,615.09
  4. Step 4: Simplify right side
    28,364.39x = 611,195,390.67
  5. Step 5: Solve for x
    x = 611,195,390.67/28,364.39
  6. Step 6: Final answer
    x = 21,547.98

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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.