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Finding the Fourth Proportional to 12,030.47, 18,010.51 and 7,017.51

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Solution

The fourth proportional to 12,030.47, 18,010.51 and 7,017.51 is: 10,505.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,030.47 : 18,010.51 = 7,017.51 : x
  2. Step 2: Convert to fraction form
    12,030.47/18,010.51 = 7,017.51/x
  3. Step 3: Cross multiply
    12,030.47x = 18,010.51 × 7,017.51
  4. Step 4: Simplify right side
    12,030.47x = 126,388,916.49
  5. Step 5: Solve for x
    x = 126,388,916.49/12,030.47
  6. Step 6: Final answer
    x = 10,505.74

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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.