Home / 30,740.86-42,423.24-18,803.98

Finding the Fourth Proportional to 30,740.86, 42,423.24 and 18,803.98

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Solution

The fourth proportional to 30,740.86, 42,423.24 and 18,803.98 is: 25,950.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,740.86 : 42,423.24 = 18,803.98 : x
  2. Step 2: Convert to fraction form
    30,740.86/42,423.24 = 18,803.98/x
  3. Step 3: Cross multiply
    30,740.86x = 42,423.24 × 18,803.98
  4. Step 4: Simplify right side
    30,740.86x = 797,725,756.50
  5. Step 5: Solve for x
    x = 797,725,756.50/30,740.86
  6. Step 6: Final answer
    x = 25,950.01

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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.