Home / 21,438.02-29,586.30-12,486.35

Finding the Fourth Proportional to 21,438.02, 29,586.30 and 12,486.35

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Solution

The fourth proportional to 21,438.02, 29,586.30 and 12,486.35 is: 17,232.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.02 : 29,586.30 = 12,486.35 : x
  2. Step 2: Convert to fraction form
    21,438.02/29,586.30 = 12,486.35/x
  3. Step 3: Cross multiply
    21,438.02x = 29,586.30 × 12,486.35
  4. Step 4: Simplify right side
    21,438.02x = 369,424,897.01
  5. Step 5: Solve for x
    x = 369,424,897.01/21,438.02
  6. Step 6: Final answer
    x = 17,232.23

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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.