Home / 21,838.37-30,138.02-12,281.26

Finding the Fourth Proportional to 21,838.37, 30,138.02 and 12,281.26

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Solution

The fourth proportional to 21,838.37, 30,138.02 and 12,281.26 is: 16,948.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,838.37 : 30,138.02 = 12,281.26 : x
  2. Step 2: Convert to fraction form
    21,838.37/30,138.02 = 12,281.26/x
  3. Step 3: Cross multiply
    21,838.37x = 30,138.02 × 12,281.26
  4. Step 4: Simplify right side
    21,838.37x = 370,132,859.51
  5. Step 5: Solve for x
    x = 370,132,859.51/21,838.37
  6. Step 6: Final answer
    x = 16,948.74

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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.