Home / 30,143.90-45,228.24-10,424.05

Finding the Fourth Proportional to 30,143.90, 45,228.24 and 10,424.05

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Solution

The fourth proportional to 30,143.90, 45,228.24 and 10,424.05 is: 15,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,143.90 : 45,228.24 = 10,424.05 : x
  2. Step 2: Convert to fraction form
    30,143.90/45,228.24 = 10,424.05/x
  3. Step 3: Cross multiply
    30,143.90x = 45,228.24 × 10,424.05
  4. Step 4: Simplify right side
    30,143.90x = 471,461,322.10
  5. Step 5: Solve for x
    x = 471,461,322.10/30,143.90
  6. Step 6: Final answer
    x = 15,640.35

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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.