Home / 15,465.81-21,342.75-8,392.22

Finding the Fourth Proportional to 15,465.81, 21,342.75 and 8,392.22

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Solution

The fourth proportional to 15,465.81, 21,342.75 and 8,392.22 is: 11,581.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.81 : 21,342.75 = 8,392.22 : x
  2. Step 2: Convert to fraction form
    15,465.81/21,342.75 = 8,392.22/x
  3. Step 3: Cross multiply
    15,465.81x = 21,342.75 × 8,392.22
  4. Step 4: Simplify right side
    15,465.81x = 179,113,053.41
  5. Step 5: Solve for x
    x = 179,113,053.41/15,465.81
  6. Step 6: Final answer
    x = 11,581.23

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Half scale
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Double scale
Find fourth proportional to 15,466.81, 21,344.13 and 8,393.22
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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.