Home / 13,210.70-18,230.66-7,242.36

Finding the Fourth Proportional to 13,210.70, 18,230.66 and 7,242.36

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Solution

The fourth proportional to 13,210.70, 18,230.66 and 7,242.36 is: 9,994.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.70 : 18,230.66 = 7,242.36 : x
  2. Step 2: Convert to fraction form
    13,210.70/18,230.66 = 7,242.36/x
  3. Step 3: Cross multiply
    13,210.70x = 18,230.66 × 7,242.36
  4. Step 4: Simplify right side
    13,210.70x = 132,032,966.55
  5. Step 5: Solve for x
    x = 132,032,966.55/13,210.70
  6. Step 6: Final answer
    x = 9,994.40

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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.