Home / 30,136.23-45,215.19-10,416.78

Finding the Fourth Proportional to 30,136.23, 45,215.19 and 10,416.78

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Solution

The fourth proportional to 30,136.23, 45,215.19 and 10,416.78 is: 15,628.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,136.23 : 45,215.19 = 10,416.78 : x
  2. Step 2: Convert to fraction form
    30,136.23/45,215.19 = 10,416.78/x
  3. Step 3: Cross multiply
    30,136.23x = 45,215.19 × 10,416.78
  4. Step 4: Simplify right side
    30,136.23x = 470,996,686.89
  5. Step 5: Solve for x
    x = 470,996,686.89/30,136.23
  6. Step 6: Final answer
    x = 15,628.92

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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.