Home / 19,421,405.40-29,142,605.70-8,640,370.20

Finding the Fourth Proportional to 19,421,405.40, 29,142,605.70 and 8,640,370.20

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Solution

The fourth proportional to 19,421,405.40, 29,142,605.70 and 8,640,370.20 is: 12,965,225.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421,405.40 : 29,142,605.70 = 8,640,370.20 : x
  2. Step 2: Convert to fraction form
    19,421,405.40/29,142,605.70 = 8,640,370.20/x
  3. Step 3: Cross multiply
    19,421,405.40x = 29,142,605.70 × 8,640,370.20
  4. Step 4: Simplify right side
    19,421,405.40x = 251,802,901,840,630.12
  5. Step 5: Solve for x
    x = 251,802,901,840,630.12/19,421,405.40
  6. Step 6: Final answer
    x = 12,965,225.57

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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.