Home / 28,860.89-43,291.34-21,013.35

Finding the Fourth Proportional to 28,860.89, 43,291.34 and 21,013.35

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Solution

The fourth proportional to 28,860.89, 43,291.34 and 21,013.35 is: 31,520.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,860.89 : 43,291.34 = 21,013.35 : x
  2. Step 2: Convert to fraction form
    28,860.89/43,291.34 = 21,013.35/x
  3. Step 3: Cross multiply
    28,860.89x = 43,291.34 × 21,013.35
  4. Step 4: Simplify right side
    28,860.89x = 909,696,071.64
  5. Step 5: Solve for x
    x = 909,696,071.64/28,860.89
  6. Step 6: Final answer
    x = 31,520.02

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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.