Home / 15,457.87-21,331.88-8,384.29

Finding the Fourth Proportional to 15,457.87, 21,331.88 and 8,384.29

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Solution

The fourth proportional to 15,457.87, 21,331.88 and 8,384.29 is: 11,570.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,457.87 : 21,331.88 = 8,384.29 : x
  2. Step 2: Convert to fraction form
    15,457.87/21,331.88 = 8,384.29/x
  3. Step 3: Cross multiply
    15,457.87x = 21,331.88 × 8,384.29
  4. Step 4: Simplify right side
    15,457.87x = 178,852,668.17
  5. Step 5: Solve for x
    x = 178,852,668.17/15,457.87
  6. Step 6: Final answer
    x = 11,570.33

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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.