Home / 30,525.85-42,053.74-28,688.77

Finding the Fourth Proportional to 30,525.85, 42,053.74 and 28,688.77

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Solution

The fourth proportional to 30,525.85, 42,053.74 and 28,688.77 is: 39,522.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,525.85 : 42,053.74 = 28,688.77 : x
  2. Step 2: Convert to fraction form
    30,525.85/42,053.74 = 28,688.77/x
  3. Step 3: Cross multiply
    30,525.85x = 42,053.74 × 28,688.77
  4. Step 4: Simplify right side
    30,525.85x = 1,206,470,074.50
  5. Step 5: Solve for x
    x = 1,206,470,074.50/30,525.85
  6. Step 6: Final answer
    x = 39,522.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.