Home / 10,821.28-14,941.20-7,106.08

Finding the Fourth Proportional to 10,821.28, 14,941.20 and 7,106.08

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Solution

The fourth proportional to 10,821.28, 14,941.20 and 7,106.08 is: 9,811.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.28 : 14,941.20 = 7,106.08 : x
  2. Step 2: Convert to fraction form
    10,821.28/14,941.20 = 7,106.08/x
  3. Step 3: Cross multiply
    10,821.28x = 14,941.20 × 7,106.08
  4. Step 4: Simplify right side
    10,821.28x = 106,173,362.50
  5. Step 5: Solve for x
    x = 106,173,362.50/10,821.28
  6. Step 6: Final answer
    x = 9,811.53

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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.