Home / 30,157.32-45,240.08-10,430.58

Finding the Fourth Proportional to 30,157.32, 45,240.08 and 10,430.58

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Solution

The fourth proportional to 30,157.32, 45,240.08 and 10,430.58 is: 15,647.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,157.32 : 45,240.08 = 10,430.58 : x
  2. Step 2: Convert to fraction form
    30,157.32/45,240.08 = 10,430.58/x
  3. Step 3: Cross multiply
    30,157.32x = 45,240.08 × 10,430.58
  4. Step 4: Simplify right side
    30,157.32x = 471,880,273.65
  5. Step 5: Solve for x
    x = 471,880,273.65/30,157.32
  6. Step 6: Final answer
    x = 15,647.29

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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.