Home / 30,378.74-45,576.57-9,319.47

Finding the Fourth Proportional to 30,378.74, 45,576.57 and 9,319.47

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Solution

The fourth proportional to 30,378.74, 45,576.57 and 9,319.47 is: 13,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378.74 : 45,576.57 = 9,319.47 : x
  2. Step 2: Convert to fraction form
    30,378.74/45,576.57 = 9,319.47/x
  3. Step 3: Cross multiply
    30,378.74x = 45,576.57 × 9,319.47
  4. Step 4: Simplify right side
    30,378.74x = 424,749,345.97
  5. Step 5: Solve for x
    x = 424,749,345.97/30,378.74
  6. Step 6: Final answer
    x = 13,981.80

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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.