Home / 30,139.09-45,223.21-18,445.93

Finding the Fourth Proportional to 30,139.09, 45,223.21 and 18,445.93

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Solution

The fourth proportional to 30,139.09, 45,223.21 and 18,445.93 is: 27,677.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,139.09 : 45,223.21 = 18,445.93 : x
  2. Step 2: Convert to fraction form
    30,139.09/45,223.21 = 18,445.93/x
  3. Step 3: Cross multiply
    30,139.09x = 45,223.21 × 18,445.93
  4. Step 4: Simplify right side
    30,139.09x = 834,184,166.04
  5. Step 5: Solve for x
    x = 834,184,166.04/30,139.09
  6. Step 6: Final answer
    x = 27,677.82

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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.