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Finding the Fourth Proportional to 14,378.74, 21,541.37 and 7,810.45

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Solution

The fourth proportional to 14,378.74, 21,541.37 and 7,810.45 is: 11,701.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.74 : 21,541.37 = 7,810.45 : x
  2. Step 2: Convert to fraction form
    14,378.74/21,541.37 = 7,810.45/x
  3. Step 3: Cross multiply
    14,378.74x = 21,541.37 × 7,810.45
  4. Step 4: Simplify right side
    14,378.74x = 168,247,700.41
  5. Step 5: Solve for x
    x = 168,247,700.41/14,378.74
  6. Step 6: Final answer
    x = 11,701.15

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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.