Home / 15,461.30-21,329.60-9,490.79

Finding the Fourth Proportional to 15,461.30, 21,329.60 and 9,490.79

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Solution

The fourth proportional to 15,461.30, 21,329.60 and 9,490.79 is: 13,093.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,461.30 : 21,329.60 = 9,490.79 : x
  2. Step 2: Convert to fraction form
    15,461.30/21,329.60 = 9,490.79/x
  3. Step 3: Cross multiply
    15,461.30x = 21,329.60 × 9,490.79
  4. Step 4: Simplify right side
    15,461.30x = 202,434,760.25
  5. Step 5: Solve for x
    x = 202,434,760.25/15,461.30
  6. Step 6: Final answer
    x = 13,093.00

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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.