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Finding the Fourth Proportional to 12,574,551.60, 18,861,827.40 and 11,830,534.20

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Solution

The fourth proportional to 12,574,551.60, 18,861,827.40 and 11,830,534.20 is: 17,745,801.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,574,551.60 : 18,861,827.40 = 11,830,534.20 : x
  2. Step 2: Convert to fraction form
    12,574,551.60/18,861,827.40 = 11,830,534.20/x
  3. Step 3: Cross multiply
    12,574,551.60x = 18,861,827.40 × 11,830,534.20
  4. Step 4: Simplify right side
    12,574,551.60x = 223,145,494,130,197.06
  5. Step 5: Solve for x
    x = 223,145,494,130,197.06/12,574,551.60
  6. Step 6: Final answer
    x = 17,745,801.30

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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.