Home / 21,235.94-31,838.74-9,984.98

Finding the Fourth Proportional to 21,235.94, 31,838.74 and 9,984.98

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Solution

The fourth proportional to 21,235.94, 31,838.74 and 9,984.98 is: 14,970.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.94 : 31,838.74 = 9,984.98 : x
  2. Step 2: Convert to fraction form
    21,235.94/31,838.74 = 9,984.98/x
  3. Step 3: Cross multiply
    21,235.94x = 31,838.74 × 9,984.98
  4. Step 4: Simplify right side
    21,235.94x = 317,909,182.13
  5. Step 5: Solve for x
    x = 317,909,182.13/21,235.94
  6. Step 6: Final answer
    x = 14,970.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.