Home / 13,440.30-18,547.26-7,472.48

Finding the Fourth Proportional to 13,440.30, 18,547.26 and 7,472.48

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Solution

The fourth proportional to 13,440.30, 18,547.26 and 7,472.48 is: 10,311.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.30 : 18,547.26 = 7,472.48 : x
  2. Step 2: Convert to fraction form
    13,440.30/18,547.26 = 7,472.48/x
  3. Step 3: Cross multiply
    13,440.30x = 18,547.26 × 7,472.48
  4. Step 4: Simplify right side
    13,440.30x = 138,594,029.40
  5. Step 5: Solve for x
    x = 138,594,029.40/13,440.30
  6. Step 6: Final answer
    x = 10,311.83

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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.