Home / 14,775.99-20,390.86-9,470.80

Finding the Fourth Proportional to 14,775.99, 20,390.86 and 9,470.80

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Solution

The fourth proportional to 14,775.99, 20,390.86 and 9,470.80 is: 13,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.99 : 20,390.86 = 9,470.80 : x
  2. Step 2: Convert to fraction form
    14,775.99/20,390.86 = 9,470.80/x
  3. Step 3: Cross multiply
    14,775.99x = 20,390.86 × 9,470.80
  4. Step 4: Simplify right side
    14,775.99x = 193,117,756.89
  5. Step 5: Solve for x
    x = 193,117,756.89/14,775.99
  6. Step 6: Final answer
    x = 13,069.70

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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.