Home / 15,558.99-21,471.68-8,485.47

Finding the Fourth Proportional to 15,558.99, 21,471.68 and 8,485.47

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Solution

The fourth proportional to 15,558.99, 21,471.68 and 8,485.47 is: 11,710.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.99 : 21,471.68 = 8,485.47 : x
  2. Step 2: Convert to fraction form
    15,558.99/21,471.68 = 8,485.47/x
  3. Step 3: Cross multiply
    15,558.99x = 21,471.68 × 8,485.47
  4. Step 4: Simplify right side
    15,558.99x = 182,197,254.06
  5. Step 5: Solve for x
    x = 182,197,254.06/15,558.99
  6. Step 6: Final answer
    x = 11,710.10

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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.