Home / 30,312.36-45,511.07-15,531.89

Finding the Fourth Proportional to 30,312.36, 45,511.07 and 15,531.89

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Solution

The fourth proportional to 30,312.36, 45,511.07 and 15,531.89 is: 23,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,312.36 : 45,511.07 = 15,531.89 : x
  2. Step 2: Convert to fraction form
    30,312.36/45,511.07 = 15,531.89/x
  3. Step 3: Cross multiply
    30,312.36x = 45,511.07 × 15,531.89
  4. Step 4: Simplify right side
    30,312.36x = 706,872,627.81
  5. Step 5: Solve for x
    x = 706,872,627.81/30,312.36
  6. Step 6: Final answer
    x = 23,319.62

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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.