Home / 30,155.40-45,199.23-14,152.79

Finding the Fourth Proportional to 30,155.40, 45,199.23 and 14,152.79

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Solution

The fourth proportional to 30,155.40, 45,199.23 and 14,152.79 is: 21,213.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.40 : 45,199.23 = 14,152.79 : x
  2. Step 2: Convert to fraction form
    30,155.40/45,199.23 = 14,152.79/x
  3. Step 3: Cross multiply
    30,155.40x = 45,199.23 × 14,152.79
  4. Step 4: Simplify right side
    30,155.40x = 639,695,270.28
  5. Step 5: Solve for x
    x = 639,695,270.28/30,155.40
  6. Step 6: Final answer
    x = 21,213.29

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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.