Home / 30,881.47-46,302.21-20,319.51

Finding the Fourth Proportional to 30,881.47, 46,302.21 and 20,319.51

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Solution

The fourth proportional to 30,881.47, 46,302.21 and 20,319.51 is: 30,466.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,881.47 : 46,302.21 = 20,319.51 : x
  2. Step 2: Convert to fraction form
    30,881.47/46,302.21 = 20,319.51/x
  3. Step 3: Cross multiply
    30,881.47x = 46,302.21 × 20,319.51
  4. Step 4: Simplify right side
    30,881.47x = 940,838,075.15
  5. Step 5: Solve for x
    x = 940,838,075.15/30,881.47
  6. Step 6: Final answer
    x = 30,466.11

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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.