Home / 15,457.64-21,331.22-8,743.55

Finding the Fourth Proportional to 15,457.64, 21,331.22 and 8,743.55

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Solution

The fourth proportional to 15,457.64, 21,331.22 and 8,743.55 is: 12,065.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,457.64 : 21,331.22 = 8,743.55 : x
  2. Step 2: Convert to fraction form
    15,457.64/21,331.22 = 8,743.55/x
  3. Step 3: Cross multiply
    15,457.64x = 21,331.22 × 8,743.55
  4. Step 4: Simplify right side
    15,457.64x = 186,510,438.26
  5. Step 5: Solve for x
    x = 186,510,438.26/15,457.64
  6. Step 6: Final answer
    x = 12,065.91

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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.