Home / 20,973.21-28,941.29-12,358.05

Finding the Fourth Proportional to 20,973.21, 28,941.29 and 12,358.05

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Solution

The fourth proportional to 20,973.21, 28,941.29 and 12,358.05 is: 17,053.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.21 : 28,941.29 = 12,358.05 : x
  2. Step 2: Convert to fraction form
    20,973.21/28,941.29 = 12,358.05/x
  3. Step 3: Cross multiply
    20,973.21x = 28,941.29 × 12,358.05
  4. Step 4: Simplify right side
    20,973.21x = 357,657,702.39
  5. Step 5: Solve for x
    x = 357,657,702.39/20,973.21
  6. Step 6: Final answer
    x = 17,053.08

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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.