Home / 15,763.78-21,752.40-9,047.80

Finding the Fourth Proportional to 15,763.78, 21,752.40 and 9,047.80

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Solution

The fourth proportional to 15,763.78, 21,752.40 and 9,047.80 is: 12,485.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,763.78 : 21,752.40 = 9,047.80 : x
  2. Step 2: Convert to fraction form
    15,763.78/21,752.40 = 9,047.80/x
  3. Step 3: Cross multiply
    15,763.78x = 21,752.40 × 9,047.80
  4. Step 4: Simplify right side
    15,763.78x = 196,811,364.72
  5. Step 5: Solve for x
    x = 196,811,364.72/15,763.78
  6. Step 6: Final answer
    x = 12,485.04

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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.