Home / 30,140.30-45,210.45-10,408.10

Finding the Fourth Proportional to 30,140.30, 45,210.45 and 10,408.10

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Solution

The fourth proportional to 30,140.30, 45,210.45 and 10,408.10 is: 15,612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,140.30 : 45,210.45 = 10,408.10 : x
  2. Step 2: Convert to fraction form
    30,140.30/45,210.45 = 10,408.10/x
  3. Step 3: Cross multiply
    30,140.30x = 45,210.45 × 10,408.10
  4. Step 4: Simplify right side
    30,140.30x = 470,554,697.62
  5. Step 5: Solve for x
    x = 470,554,697.62/30,140.30
  6. Step 6: Final answer
    x = 15,612.14

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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.