Home / 21,439.41-29,587.30-12,485.46

Finding the Fourth Proportional to 21,439.41, 29,587.30 and 12,485.46

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Solution

The fourth proportional to 21,439.41, 29,587.30 and 12,485.46 is: 17,230.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.41 : 29,587.30 = 12,485.46 : x
  2. Step 2: Convert to fraction form
    21,439.41/29,587.30 = 12,485.46/x
  3. Step 3: Cross multiply
    21,439.41x = 29,587.30 × 12,485.46
  4. Step 4: Simplify right side
    21,439.41x = 369,411,130.40
  5. Step 5: Solve for x
    x = 369,411,130.40/21,439.41
  6. Step 6: Final answer
    x = 17,230.47

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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.