Home / 18,712,459.47-28,068,672.80-7,043,011.10

Finding the Fourth Proportional to 18,712,459.47, 28,068,672.80 and 7,043,011.10

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Solution

The fourth proportional to 18,712,459.47, 28,068,672.80 and 7,043,011.10 is: 10,564,510.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712,459.47 : 28,068,672.80 = 7,043,011.10 : x
  2. Step 2: Convert to fraction form
    18,712,459.47/28,068,672.80 = 7,043,011.10/x
  3. Step 3: Cross multiply
    18,712,459.47x = 28,068,672.80 × 7,043,011.10
  4. Step 4: Simplify right side
    18,712,459.47x = 197,687,973,917,109.66
  5. Step 5: Solve for x
    x = 197,687,973,917,109.66/18,712,459.47
  6. Step 6: Final answer
    x = 10,564,510.47

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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.