Home / 15,630.47-21,570.06-8,556.91

Finding the Fourth Proportional to 15,630.47, 21,570.06 and 8,556.91

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Solution

The fourth proportional to 15,630.47, 21,570.06 and 8,556.91 is: 11,808.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630.47 : 21,570.06 = 8,556.91 : x
  2. Step 2: Convert to fraction form
    15,630.47/21,570.06 = 8,556.91/x
  3. Step 3: Cross multiply
    15,630.47x = 21,570.06 × 8,556.91
  4. Step 4: Simplify right side
    15,630.47x = 184,573,040.28
  5. Step 5: Solve for x
    x = 184,573,040.28/15,630.47
  6. Step 6: Final answer
    x = 11,808.54

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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.