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Finding the Fourth Proportional to 10,878.51, 16,325.06 and 6,985.65

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Solution

The fourth proportional to 10,878.51, 16,325.06 and 6,985.65 is: 10,483.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.51 : 16,325.06 = 6,985.65 : x
  2. Step 2: Convert to fraction form
    10,878.51/16,325.06 = 6,985.65/x
  3. Step 3: Cross multiply
    10,878.51x = 16,325.06 × 6,985.65
  4. Step 4: Simplify right side
    10,878.51x = 114,041,120.46
  5. Step 5: Solve for x
    x = 114,041,120.46/10,878.51
  6. Step 6: Final answer
    x = 10,483.16

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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.