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Finding the Fourth Proportional to 13,953.66, 19,255.95 and 7,985.04

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Solution

The fourth proportional to 13,953.66, 19,255.95 and 7,985.04 is: 11,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.66 : 19,255.95 = 7,985.04 : x
  2. Step 2: Convert to fraction form
    13,953.66/19,255.95 = 7,985.04/x
  3. Step 3: Cross multiply
    13,953.66x = 19,255.95 × 7,985.04
  4. Step 4: Simplify right side
    13,953.66x = 153,759,530.99
  5. Step 5: Solve for x
    x = 153,759,530.99/13,953.66
  6. Step 6: Final answer
    x = 11,019.30

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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.