Home / 28,359.47-39,130.13-16,422.09

Finding the Fourth Proportional to 28,359.47, 39,130.13 and 16,422.09

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Solution

The fourth proportional to 28,359.47, 39,130.13 and 16,422.09 is: 22,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.47 : 39,130.13 = 16,422.09 : x
  2. Step 2: Convert to fraction form
    28,359.47/39,130.13 = 16,422.09/x
  3. Step 3: Cross multiply
    28,359.47x = 39,130.13 × 16,422.09
  4. Step 4: Simplify right side
    28,359.47x = 642,598,434.46
  5. Step 5: Solve for x
    x = 642,598,434.46/28,359.47
  6. Step 6: Final answer
    x = 22,659.05

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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.