Home / 10,647.76-14,686.08-6,869

Finding the Fourth Proportional to 10,647.76, 14,686.08 and 6,869

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Solution

The fourth proportional to 10,647.76, 14,686.08 and 6,869 is: 9,474.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,647.76 : 14,686.08 = 6,869 : x
  2. Step 2: Convert to fraction form
    10,647.76/14,686.08 = 6,869/x
  3. Step 3: Cross multiply
    10,647.76x = 14,686.08 × 6,869
  4. Step 4: Simplify right side
    10,647.76x = 100,878,683.52
  5. Step 5: Solve for x
    x = 100,878,683.52/10,647.76
  6. Step 6: Final answer
    x = 9,474.17

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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.