Home / 10,305.80-15,426.30-7,389.80

Finding the Fourth Proportional to 10,305.80, 15,426.30 and 7,389.80

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Solution

The fourth proportional to 10,305.80, 15,426.30 and 7,389.80 is: 11,061.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,305.80 : 15,426.30 = 7,389.80 : x
  2. Step 2: Convert to fraction form
    10,305.80/15,426.30 = 7,389.80/x
  3. Step 3: Cross multiply
    10,305.80x = 15,426.30 × 7,389.80
  4. Step 4: Simplify right side
    10,305.80x = 113,997,271.74
  5. Step 5: Solve for x
    x = 113,997,271.74/10,305.80
  6. Step 6: Final answer
    x = 11,061.47

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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.