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Finding the Fourth Proportional to 30,507.04, 45,686.04 and 18,804.16

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Solution

The fourth proportional to 30,507.04, 45,686.04 and 18,804.16 is: 28,160.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,507.04 : 45,686.04 = 18,804.16 : x
  2. Step 2: Convert to fraction form
    30,507.04/45,686.04 = 18,804.16/x
  3. Step 3: Cross multiply
    30,507.04x = 45,686.04 × 18,804.16
  4. Step 4: Simplify right side
    30,507.04x = 859,087,605.93
  5. Step 5: Solve for x
    x = 859,087,605.93/30,507.04
  6. Step 6: Final answer
    x = 28,160.31

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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.