Home / 15,810.69-21,800.98-10,777.86

Finding the Fourth Proportional to 15,810.69, 21,800.98 and 10,777.86

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Solution

The fourth proportional to 15,810.69, 21,800.98 and 10,777.86 is: 14,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,810.69 : 21,800.98 = 10,777.86 : x
  2. Step 2: Convert to fraction form
    15,810.69/21,800.98 = 10,777.86/x
  3. Step 3: Cross multiply
    15,810.69x = 21,800.98 × 10,777.86
  4. Step 4: Simplify right side
    15,810.69x = 234,967,923.78
  5. Step 5: Solve for x
    x = 234,967,923.78/15,810.69
  6. Step 6: Final answer
    x = 14,861.33

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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.