Home / 10,621.63-14,661.49-6,429.88

Finding the Fourth Proportional to 10,621.63, 14,661.49 and 6,429.88

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Solution

The fourth proportional to 10,621.63, 14,661.49 and 6,429.88 is: 8,875.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.63 : 14,661.49 = 6,429.88 : x
  2. Step 2: Convert to fraction form
    10,621.63/14,661.49 = 6,429.88/x
  3. Step 3: Cross multiply
    10,621.63x = 14,661.49 × 6,429.88
  4. Step 4: Simplify right side
    10,621.63x = 94,271,548.01
  5. Step 5: Solve for x
    x = 94,271,548.01/10,621.63
  6. Step 6: Final answer
    x = 8,875.44

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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.