Home / 21,137,426.62-29,170,366.80-20,168,875.40

Finding the Fourth Proportional to 21,137,426.62, 29,170,366.80 and 20,168,875.40

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Solution

The fourth proportional to 21,137,426.62, 29,170,366.80 and 20,168,875.40 is: 27,833,733.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137,426.62 : 29,170,366.80 = 20,168,875.40 : x
  2. Step 2: Convert to fraction form
    21,137,426.62/29,170,366.80 = 20,168,875.40/x
  3. Step 3: Cross multiply
    21,137,426.62x = 29,170,366.80 × 20,168,875.40
  4. Step 4: Simplify right side
    21,137,426.62x = 588,333,493,361,496.75
  5. Step 5: Solve for x
    x = 588,333,493,361,496.75/21,137,426.62
  6. Step 6: Final answer
    x = 27,833,733.21

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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.