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Finding the Fourth Proportional to 13,032.88, 17,985.26 and 7,064.40

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Solution

The fourth proportional to 13,032.88, 17,985.26 and 7,064.40 is: 9,748.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,032.88 : 17,985.26 = 7,064.40 : x
  2. Step 2: Convert to fraction form
    13,032.88/17,985.26 = 7,064.40/x
  3. Step 3: Cross multiply
    13,032.88x = 17,985.26 × 7,064.40
  4. Step 4: Simplify right side
    13,032.88x = 127,055,070.74
  5. Step 5: Solve for x
    x = 127,055,070.74/13,032.88
  6. Step 6: Final answer
    x = 9,748.81

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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.