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Finding the Fourth Proportional to 21,746,430.80, 32,630,143.80 and 15,342,894.80

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Solution

The fourth proportional to 21,746,430.80, 32,630,143.80 and 15,342,894.80 is: 23,021,748.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,746,430.80 : 32,630,143.80 = 15,342,894.80 : x
  2. Step 2: Convert to fraction form
    21,746,430.80/32,630,143.80 = 15,342,894.80/x
  3. Step 3: Cross multiply
    21,746,430.80x = 32,630,143.80 × 15,342,894.80
  4. Step 4: Simplify right side
    21,746,430.80x = 500,640,863,632,272.25
  5. Step 5: Solve for x
    x = 500,640,863,632,272.25/21,746,430.80
  6. Step 6: Final answer
    x = 23,021,748.64

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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.