Home / 30,533.16-45,799.50-18,139.08

Finding the Fourth Proportional to 30,533.16, 45,799.50 and 18,139.08

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Solution

The fourth proportional to 30,533.16, 45,799.50 and 18,139.08 is: 27,208.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,533.16 : 45,799.50 = 18,139.08 : x
  2. Step 2: Convert to fraction form
    30,533.16/45,799.50 = 18,139.08/x
  3. Step 3: Cross multiply
    30,533.16x = 45,799.50 × 18,139.08
  4. Step 4: Simplify right side
    30,533.16x = 830,760,794.46
  5. Step 5: Solve for x
    x = 830,760,794.46/30,533.16
  6. Step 6: Final answer
    x = 27,208.48

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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.