Home / 21,971.76-32,970.60-8,130.48

Finding the Fourth Proportional to 21,971.76, 32,970.60 and 8,130.48

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Solution

The fourth proportional to 21,971.76, 32,970.60 and 8,130.48 is: 12,200.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,971.76 : 32,970.60 = 8,130.48 : x
  2. Step 2: Convert to fraction form
    21,971.76/32,970.60 = 8,130.48/x
  3. Step 3: Cross multiply
    21,971.76x = 32,970.60 × 8,130.48
  4. Step 4: Simplify right side
    21,971.76x = 268,066,803.89
  5. Step 5: Solve for x
    x = 268,066,803.89/21,971.76
  6. Step 6: Final answer
    x = 12,200.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.