Home / 10,865.51-14,994.77-6,389.68

Finding the Fourth Proportional to 10,865.51, 14,994.77 and 6,389.68

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Solution

The fourth proportional to 10,865.51, 14,994.77 and 6,389.68 is: 8,817.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865.51 : 14,994.77 = 6,389.68 : x
  2. Step 2: Convert to fraction form
    10,865.51/14,994.77 = 6,389.68/x
  3. Step 3: Cross multiply
    10,865.51x = 14,994.77 × 6,389.68
  4. Step 4: Simplify right side
    10,865.51x = 95,811,712.54
  5. Step 5: Solve for x
    x = 95,811,712.54/10,865.51
  6. Step 6: Final answer
    x = 8,817.97

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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.