Home / 20,386.01-28,106.65-13,203.23

Finding the Fourth Proportional to 20,386.01, 28,106.65 and 13,203.23

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Solution

The fourth proportional to 20,386.01, 28,106.65 and 13,203.23 is: 18,203.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.01 : 28,106.65 = 13,203.23 : x
  2. Step 2: Convert to fraction form
    20,386.01/28,106.65 = 13,203.23/x
  3. Step 3: Cross multiply
    20,386.01x = 28,106.65 × 13,203.23
  4. Step 4: Simplify right side
    20,386.01x = 371,098,498.46
  5. Step 5: Solve for x
    x = 371,098,498.46/20,386.01
  6. Step 6: Final answer
    x = 18,203.59

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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.