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Finding the Fourth Proportional to 28,860.79, 43,212.98 and 14,980.63

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Solution

The fourth proportional to 28,860.79, 43,212.98 and 14,980.63 is: 22,430.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,860.79 : 43,212.98 = 14,980.63 : x
  2. Step 2: Convert to fraction form
    28,860.79/43,212.98 = 14,980.63/x
  3. Step 3: Cross multiply
    28,860.79x = 43,212.98 × 14,980.63
  4. Step 4: Simplify right side
    28,860.79x = 647,357,664.58
  5. Step 5: Solve for x
    x = 647,357,664.58/28,860.79
  6. Step 6: Final answer
    x = 22,430.35

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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.