Home / 15,529.08-21,430.23-8,455.53

Finding the Fourth Proportional to 15,529.08, 21,430.23 and 8,455.53

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Solution

The fourth proportional to 15,529.08, 21,430.23 and 8,455.53 is: 11,668.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.08 : 21,430.23 = 8,455.53 : x
  2. Step 2: Convert to fraction form
    15,529.08/21,430.23 = 8,455.53/x
  3. Step 3: Cross multiply
    15,529.08x = 21,430.23 × 8,455.53
  4. Step 4: Simplify right side
    15,529.08x = 181,203,952.67
  5. Step 5: Solve for x
    x = 181,203,952.67/15,529.08
  6. Step 6: Final answer
    x = 11,668.69

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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.