Home / 21,715.11-32,718.63-19,637.46

Finding the Fourth Proportional to 21,715.11, 32,718.63 and 19,637.46

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Solution

The fourth proportional to 21,715.11, 32,718.63 and 19,637.46 is: 29,588.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.11 : 32,718.63 = 19,637.46 : x
  2. Step 2: Convert to fraction form
    21,715.11/32,718.63 = 19,637.46/x
  3. Step 3: Cross multiply
    21,715.11x = 32,718.63 × 19,637.46
  4. Step 4: Simplify right side
    21,715.11x = 642,510,787.88
  5. Step 5: Solve for x
    x = 642,510,787.88/21,715.11
  6. Step 6: Final answer
    x = 29,588.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.