Home / 19,638.95-29,440.97-7,156.63

Finding the Fourth Proportional to 19,638.95, 29,440.97 and 7,156.63

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Solution

The fourth proportional to 19,638.95, 29,440.97 and 7,156.63 is: 10,728.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638.95 : 29,440.97 = 7,156.63 : x
  2. Step 2: Convert to fraction form
    19,638.95/29,440.97 = 7,156.63/x
  3. Step 3: Cross multiply
    19,638.95x = 29,440.97 × 7,156.63
  4. Step 4: Simplify right side
    19,638.95x = 210,697,946.14
  5. Step 5: Solve for x
    x = 210,697,946.14/19,638.95
  6. Step 6: Final answer
    x = 10,728.57

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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.