Home / 21,237.65-29,264.78-16,428.38

Finding the Fourth Proportional to 21,237.65, 29,264.78 and 16,428.38

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Solution

The fourth proportional to 21,237.65, 29,264.78 and 16,428.38 is: 22,637.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.65 : 29,264.78 = 16,428.38 : x
  2. Step 2: Convert to fraction form
    21,237.65/29,264.78 = 16,428.38/x
  3. Step 3: Cross multiply
    21,237.65x = 29,264.78 × 16,428.38
  4. Step 4: Simplify right side
    21,237.65x = 480,772,926.46
  5. Step 5: Solve for x
    x = 480,772,926.46/21,237.65
  6. Step 6: Final answer
    x = 22,637.76

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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.