Home / 21,547.48-29,735.70-12,115.96

Finding the Fourth Proportional to 21,547.48, 29,735.70 and 12,115.96

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Solution

The fourth proportional to 21,547.48, 29,735.70 and 12,115.96 is: 16,720.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,547.48 : 29,735.70 = 12,115.96 : x
  2. Step 2: Convert to fraction form
    21,547.48/29,735.70 = 12,115.96/x
  3. Step 3: Cross multiply
    21,547.48x = 29,735.70 × 12,115.96
  4. Step 4: Simplify right side
    21,547.48x = 360,276,551.77
  5. Step 5: Solve for x
    x = 360,276,551.77/21,547.48
  6. Step 6: Final answer
    x = 16,720.12

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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.