Home / 30,010.98-45,014.30-13,145.70

Finding the Fourth Proportional to 30,010.98, 45,014.30 and 13,145.70

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Solution

The fourth proportional to 30,010.98, 45,014.30 and 13,145.70 is: 19,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,010.98 : 45,014.30 = 13,145.70 : x
  2. Step 2: Convert to fraction form
    30,010.98/45,014.30 = 13,145.70/x
  3. Step 3: Cross multiply
    30,010.98x = 45,014.30 × 13,145.70
  4. Step 4: Simplify right side
    30,010.98x = 591,744,483.51
  5. Step 5: Solve for x
    x = 591,744,483.51/30,010.98
  6. Step 6: Final answer
    x = 19,717.60

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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.