Home / 13,210.61-18,230.64-7,242.15

Finding the Fourth Proportional to 13,210.61, 18,230.64 and 7,242.15

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Solution

The fourth proportional to 13,210.61, 18,230.64 and 7,242.15 is: 9,994.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.61 : 18,230.64 = 7,242.15 : x
  2. Step 2: Convert to fraction form
    13,210.61/18,230.64 = 7,242.15/x
  3. Step 3: Cross multiply
    13,210.61x = 18,230.64 × 7,242.15
  4. Step 4: Simplify right side
    13,210.61x = 132,029,029.48
  5. Step 5: Solve for x
    x = 132,029,029.48/13,210.61
  6. Step 6: Final answer
    x = 9,994.17

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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.