Home / 15,485.28-21,376.22-10,456.31

Finding the Fourth Proportional to 15,485.28, 21,376.22 and 10,456.31

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Solution

The fourth proportional to 15,485.28, 21,376.22 and 10,456.31 is: 14,434.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.28 : 21,376.22 = 10,456.31 : x
  2. Step 2: Convert to fraction form
    15,485.28/21,376.22 = 10,456.31/x
  3. Step 3: Cross multiply
    15,485.28x = 21,376.22 × 10,456.31
  4. Step 4: Simplify right side
    15,485.28x = 223,516,322.68
  5. Step 5: Solve for x
    x = 223,516,322.68/15,485.28
  6. Step 6: Final answer
    x = 14,434.12

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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.