Home / 15,443.79-21,312.48-8,370.19

Finding the Fourth Proportional to 15,443.79, 21,312.48 and 8,370.19

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Solution

The fourth proportional to 15,443.79, 21,312.48 and 8,370.19 is: 11,550.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.79 : 21,312.48 = 8,370.19 : x
  2. Step 2: Convert to fraction form
    15,443.79/21,312.48 = 8,370.19/x
  3. Step 3: Cross multiply
    15,443.79x = 21,312.48 × 8,370.19
  4. Step 4: Simplify right side
    15,443.79x = 178,389,506.97
  5. Step 5: Solve for x
    x = 178,389,506.97/15,443.79
  6. Step 6: Final answer
    x = 11,550.89

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Half scale
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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.