Home / 9,320.40-13,980.60-7,570.80

Finding the Fourth Proportional to 9,320.40, 13,980.60 and 7,570.80

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Solution

The fourth proportional to 9,320.40, 13,980.60 and 7,570.80 is: 11,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,320.40 : 13,980.60 = 7,570.80 : x
  2. Step 2: Convert to fraction form
    9,320.40/13,980.60 = 7,570.80/x
  3. Step 3: Cross multiply
    9,320.40x = 13,980.60 × 7,570.80
  4. Step 4: Simplify right side
    9,320.40x = 105,844,326.48
  5. Step 5: Solve for x
    x = 105,844,326.48/9,320.40
  6. Step 6: Final answer
    x = 11,356.20

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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.