Home / 30,156.81-45,229.06-11,430.39

Finding the Fourth Proportional to 30,156.81, 45,229.06 and 11,430.39

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Solution

The fourth proportional to 30,156.81, 45,229.06 and 11,430.39 is: 17,143.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.81 : 45,229.06 = 11,430.39 : x
  2. Step 2: Convert to fraction form
    30,156.81/45,229.06 = 11,430.39/x
  3. Step 3: Cross multiply
    30,156.81x = 45,229.06 × 11,430.39
  4. Step 4: Simplify right side
    30,156.81x = 516,985,795.13
  5. Step 5: Solve for x
    x = 516,985,795.13/30,156.81
  6. Step 6: Final answer
    x = 17,143.25

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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.