Home / 15,465.81-21,342.87-8,392.23

Finding the Fourth Proportional to 15,465.81, 21,342.87 and 8,392.23

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Solution

The fourth proportional to 15,465.81, 21,342.87 and 8,392.23 is: 11,581.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.81 : 21,342.87 = 8,392.23 : x
  2. Step 2: Convert to fraction form
    15,465.81/21,342.87 = 8,392.23/x
  3. Step 3: Cross multiply
    15,465.81x = 21,342.87 × 8,392.23
  4. Step 4: Simplify right side
    15,465.81x = 179,114,305.37
  5. Step 5: Solve for x
    x = 179,114,305.37/15,465.81
  6. Step 6: Final answer
    x = 11,581.31

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Double scale
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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.