Home / 21,690.63-29,924.78-16,038.99

Finding the Fourth Proportional to 21,690.63, 29,924.78 and 16,038.99

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Solution

The fourth proportional to 21,690.63, 29,924.78 and 16,038.99 is: 22,127.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,690.63 : 29,924.78 = 16,038.99 : x
  2. Step 2: Convert to fraction form
    21,690.63/29,924.78 = 16,038.99/x
  3. Step 3: Cross multiply
    21,690.63x = 29,924.78 × 16,038.99
  4. Step 4: Simplify right side
    21,690.63x = 479,963,166.98
  5. Step 5: Solve for x
    x = 479,963,166.98/21,690.63
  6. Step 6: Final answer
    x = 22,127.67

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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.