Home / 19,291.70-28,937.55-8,897.78

Finding the Fourth Proportional to 19,291.70, 28,937.55 and 8,897.78

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Solution

The fourth proportional to 19,291.70, 28,937.55 and 8,897.78 is: 13,346.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,291.70 : 28,937.55 = 8,897.78 : x
  2. Step 2: Convert to fraction form
    19,291.70/28,937.55 = 8,897.78/x
  3. Step 3: Cross multiply
    19,291.70x = 28,937.55 × 8,897.78
  4. Step 4: Simplify right side
    19,291.70x = 257,479,953.64
  5. Step 5: Solve for x
    x = 257,479,953.64/19,291.70
  6. Step 6: Final answer
    x = 13,346.67

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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.