Home / 30,315.64-45,478.56-13,675.28

Finding the Fourth Proportional to 30,315.64, 45,478.56 and 13,675.28

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Solution

The fourth proportional to 30,315.64, 45,478.56 and 13,675.28 is: 20,515.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,315.64 : 45,478.56 = 13,675.28 : x
  2. Step 2: Convert to fraction form
    30,315.64/45,478.56 = 13,675.28/x
  3. Step 3: Cross multiply
    30,315.64x = 45,478.56 × 13,675.28
  4. Step 4: Simplify right side
    30,315.64x = 621,932,042.00
  5. Step 5: Solve for x
    x = 621,932,042.00/30,315.64
  6. Step 6: Final answer
    x = 20,515.22

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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.