Home / 20,142,108.80-30,213,163.20-17,402,235.20

Finding the Fourth Proportional to 20,142,108.80, 30,213,163.20 and 17,402,235.20

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Solution

The fourth proportional to 20,142,108.80, 30,213,163.20 and 17,402,235.20 is: 26,103,352.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142,108.80 : 30,213,163.20 = 17,402,235.20 : x
  2. Step 2: Convert to fraction form
    20,142,108.80/30,213,163.20 = 17,402,235.20/x
  3. Step 3: Cross multiply
    20,142,108.80x = 30,213,163.20 × 17,402,235.20
  4. Step 4: Simplify right side
    20,142,108.80x = 525,776,572,142,384.62
  5. Step 5: Solve for x
    x = 525,776,572,142,384.62/20,142,108.80
  6. Step 6: Final answer
    x = 26,103,352.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.