Home / 21,339.62-29,461.29-15,386.66

Finding the Fourth Proportional to 21,339.62, 29,461.29 and 15,386.66

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Solution

The fourth proportional to 21,339.62, 29,461.29 and 15,386.66 is: 21,242.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.62 : 29,461.29 = 15,386.66 : x
  2. Step 2: Convert to fraction form
    21,339.62/29,461.29 = 15,386.66/x
  3. Step 3: Cross multiply
    21,339.62x = 29,461.29 × 15,386.66
  4. Step 4: Simplify right side
    21,339.62x = 453,310,852.39
  5. Step 5: Solve for x
    x = 453,310,852.39/21,339.62
  6. Step 6: Final answer
    x = 21,242.69

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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.