Home / 21,700.54-29,947.31-12,140.11

Finding the Fourth Proportional to 21,700.54, 29,947.31 and 12,140.11

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Solution

The fourth proportional to 21,700.54, 29,947.31 and 12,140.11 is: 16,753.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,700.54 : 29,947.31 = 12,140.11 : x
  2. Step 2: Convert to fraction form
    21,700.54/29,947.31 = 12,140.11/x
  3. Step 3: Cross multiply
    21,700.54x = 29,947.31 × 12,140.11
  4. Step 4: Simplify right side
    21,700.54x = 363,563,637.60
  5. Step 5: Solve for x
    x = 363,563,637.60/21,700.54
  6. Step 6: Final answer
    x = 16,753.67

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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.