Home / 30,124.81-45,182.05-7,938.37

Finding the Fourth Proportional to 30,124.81, 45,182.05 and 7,938.37

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Solution

The fourth proportional to 30,124.81, 45,182.05 and 7,938.37 is: 11,906.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,124.81 : 45,182.05 = 7,938.37 : x
  2. Step 2: Convert to fraction form
    30,124.81/45,182.05 = 7,938.37/x
  3. Step 3: Cross multiply
    30,124.81x = 45,182.05 × 7,938.37
  4. Step 4: Simplify right side
    30,124.81x = 358,671,564.66
  5. Step 5: Solve for x
    x = 358,671,564.66/30,124.81
  6. Step 6: Final answer
    x = 11,906.19

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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.