Home / 13,253.18-18,290.13-7,664.18

Finding the Fourth Proportional to 13,253.18, 18,290.13 and 7,664.18

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Solution

The fourth proportional to 13,253.18, 18,290.13 and 7,664.18 is: 10,577.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,253.18 : 18,290.13 = 7,664.18 : x
  2. Step 2: Convert to fraction form
    13,253.18/18,290.13 = 7,664.18/x
  3. Step 3: Cross multiply
    13,253.18x = 18,290.13 × 7,664.18
  4. Step 4: Simplify right side
    13,253.18x = 140,178,848.54
  5. Step 5: Solve for x
    x = 140,178,848.54/13,253.18
  6. Step 6: Final answer
    x = 10,577.00

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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.