Home / 21,038.45-29,032.65-11,478.41

Finding the Fourth Proportional to 21,038.45, 29,032.65 and 11,478.41

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Solution

The fourth proportional to 21,038.45, 29,032.65 and 11,478.41 is: 15,839.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.45 : 29,032.65 = 11,478.41 : x
  2. Step 2: Convert to fraction form
    21,038.45/29,032.65 = 11,478.41/x
  3. Step 3: Cross multiply
    21,038.45x = 29,032.65 × 11,478.41
  4. Step 4: Simplify right side
    21,038.45x = 333,248,514.92
  5. Step 5: Solve for x
    x = 333,248,514.92/21,038.45
  6. Step 6: Final answer
    x = 15,839.98

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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.