Home / 30,118.25-45,178.11-10,128.01

Finding the Fourth Proportional to 30,118.25, 45,178.11 and 10,128.01

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Solution

The fourth proportional to 30,118.25, 45,178.11 and 10,128.01 is: 15,192.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,118.25 : 45,178.11 = 10,128.01 : x
  2. Step 2: Convert to fraction form
    30,118.25/45,178.11 = 10,128.01/x
  3. Step 3: Cross multiply
    30,118.25x = 45,178.11 × 10,128.01
  4. Step 4: Simplify right side
    30,118.25x = 457,564,114.23
  5. Step 5: Solve for x
    x = 457,564,114.23/30,118.25
  6. Step 6: Final answer
    x = 15,192.25

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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.