Home / 13,148.84-18,145.30-7,180.50

Finding the Fourth Proportional to 13,148.84, 18,145.30 and 7,180.50

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Solution

The fourth proportional to 13,148.84, 18,145.30 and 7,180.50 is: 9,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.84 : 18,145.30 = 7,180.50 : x
  2. Step 2: Convert to fraction form
    13,148.84/18,145.30 = 7,180.50/x
  3. Step 3: Cross multiply
    13,148.84x = 18,145.30 × 7,180.50
  4. Step 4: Simplify right side
    13,148.84x = 130,292,403.67
  5. Step 5: Solve for x
    x = 130,292,403.67/13,148.84
  6. Step 6: Final answer
    x = 9,909.05

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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.