Home / 10,431.02-14,394.48-5,715.20

Finding the Fourth Proportional to 10,431.02, 14,394.48 and 5,715.20

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Solution

The fourth proportional to 10,431.02, 14,394.48 and 5,715.20 is: 7,886.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431.02 : 14,394.48 = 5,715.20 : x
  2. Step 2: Convert to fraction form
    10,431.02/14,394.48 = 5,715.20/x
  3. Step 3: Cross multiply
    10,431.02x = 14,394.48 × 5,715.20
  4. Step 4: Simplify right side
    10,431.02x = 82,267,346.65
  5. Step 5: Solve for x
    x = 82,267,346.65/10,431.02
  6. Step 6: Final answer
    x = 7,886.80

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Half scale
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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.