Home / 30,205.80-45,308.70-10,482.30

Finding the Fourth Proportional to 30,205.80, 45,308.70 and 10,482.30

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Solution

The fourth proportional to 30,205.80, 45,308.70 and 10,482.30 is: 15,723.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,205.80 : 45,308.70 = 10,482.30 : x
  2. Step 2: Convert to fraction form
    30,205.80/45,308.70 = 10,482.30/x
  3. Step 3: Cross multiply
    30,205.80x = 45,308.70 × 10,482.30
  4. Step 4: Simplify right side
    30,205.80x = 474,939,386.01
  5. Step 5: Solve for x
    x = 474,939,386.01/30,205.80
  6. Step 6: Final answer
    x = 15,723.45

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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.