Home / 13,026.39-17,970.54-7,988.58

Finding the Fourth Proportional to 13,026.39, 17,970.54 and 7,988.58

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Solution

The fourth proportional to 13,026.39, 17,970.54 and 7,988.58 is: 11,020.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,026.39 : 17,970.54 = 7,988.58 : x
  2. Step 2: Convert to fraction form
    13,026.39/17,970.54 = 7,988.58/x
  3. Step 3: Cross multiply
    13,026.39x = 17,970.54 × 7,988.58
  4. Step 4: Simplify right side
    13,026.39x = 143,559,096.43
  5. Step 5: Solve for x
    x = 143,559,096.43/13,026.39
  6. Step 6: Final answer
    x = 11,020.64

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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.