Home / 10,384.80-14,331.12-5,669.28

Finding the Fourth Proportional to 10,384.80, 14,331.12 and 5,669.28

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Solution

The fourth proportional to 10,384.80, 14,331.12 and 5,669.28 is: 7,823.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,384.80 : 14,331.12 = 5,669.28 : x
  2. Step 2: Convert to fraction form
    10,384.80/14,331.12 = 5,669.28/x
  3. Step 3: Cross multiply
    10,384.80x = 14,331.12 × 5,669.28
  4. Step 4: Simplify right side
    10,384.80x = 81,247,131.99
  5. Step 5: Solve for x
    x = 81,247,131.99/10,384.80
  6. Step 6: Final answer
    x = 7,823.66

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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.