Home / 10,897.74-15,039.39-8,535.78

Finding the Fourth Proportional to 10,897.74, 15,039.39 and 8,535.78

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Solution

The fourth proportional to 10,897.74, 15,039.39 and 8,535.78 is: 11,779.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,897.74 : 15,039.39 = 8,535.78 : x
  2. Step 2: Convert to fraction form
    10,897.74/15,039.39 = 8,535.78/x
  3. Step 3: Cross multiply
    10,897.74x = 15,039.39 × 8,535.78
  4. Step 4: Simplify right side
    10,897.74x = 128,372,924.37
  5. Step 5: Solve for x
    x = 128,372,924.37/10,897.74
  6. Step 6: Final answer
    x = 11,779.77

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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.