Home / 21,041.47-29,040.00-13,385.49

Finding the Fourth Proportional to 21,041.47, 29,040.00 and 13,385.49

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Solution

The fourth proportional to 21,041.47, 29,040.00 and 13,385.49 is: 18,473.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.47 : 29,040.00 = 13,385.49 : x
  2. Step 2: Convert to fraction form
    21,041.47/29,040.00 = 13,385.49/x
  3. Step 3: Cross multiply
    21,041.47x = 29,040.00 × 13,385.49
  4. Step 4: Simplify right side
    21,041.47x = 388,714,590.46
  5. Step 5: Solve for x
    x = 388,714,590.46/21,041.47
  6. Step 6: Final answer
    x = 18,473.74

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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.