Home / 15,393.52-21,245.06-8,681.24

Finding the Fourth Proportional to 15,393.52, 21,245.06 and 8,681.24

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Solution

The fourth proportional to 15,393.52, 21,245.06 and 8,681.24 is: 11,981.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.52 : 21,245.06 = 8,681.24 : x
  2. Step 2: Convert to fraction form
    15,393.52/21,245.06 = 8,681.24/x
  3. Step 3: Cross multiply
    15,393.52x = 21,245.06 × 8,681.24
  4. Step 4: Simplify right side
    15,393.52x = 184,433,421.27
  5. Step 5: Solve for x
    x = 184,433,421.27/15,393.52
  6. Step 6: Final answer
    x = 11,981.24

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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.