Home / 21,361.12-32,041.20-12,537.76

Finding the Fourth Proportional to 21,361.12, 32,041.20 and 12,537.76

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Solution

The fourth proportional to 21,361.12, 32,041.20 and 12,537.76 is: 18,806.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.12 : 32,041.20 = 12,537.76 : x
  2. Step 2: Convert to fraction form
    21,361.12/32,041.20 = 12,537.76/x
  3. Step 3: Cross multiply
    21,361.12x = 32,041.20 × 12,537.76
  4. Step 4: Simplify right side
    21,361.12x = 401,724,875.71
  5. Step 5: Solve for x
    x = 401,724,875.71/21,361.12
  6. Step 6: Final answer
    x = 18,806.36

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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.