Home / 13,038.56-17,981.60-10,239.20

Finding the Fourth Proportional to 13,038.56, 17,981.60 and 10,239.20

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Solution

The fourth proportional to 13,038.56, 17,981.60 and 10,239.20 is: 14,120.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,038.56 : 17,981.60 = 10,239.20 : x
  2. Step 2: Convert to fraction form
    13,038.56/17,981.60 = 10,239.20/x
  3. Step 3: Cross multiply
    13,038.56x = 17,981.60 × 10,239.20
  4. Step 4: Simplify right side
    13,038.56x = 184,117,198.72
  5. Step 5: Solve for x
    x = 184,117,198.72/13,038.56
  6. Step 6: Final answer
    x = 14,120.98

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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.