Home / 28,018,016.40-42,013,027.80-12,854,816.40

Finding the Fourth Proportional to 28,018,016.40, 42,013,027.80 and 12,854,816.40

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Solution

The fourth proportional to 28,018,016.40, 42,013,027.80 and 12,854,816.40 is: 19,275,802.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018,016.40 : 42,013,027.80 = 12,854,816.40 : x
  2. Step 2: Convert to fraction form
    28,018,016.40/42,013,027.80 = 12,854,816.40/x
  3. Step 3: Cross multiply
    28,018,016.40x = 42,013,027.80 × 12,854,816.40
  4. Step 4: Simplify right side
    28,018,016.40x = 540,069,758,777,095.88
  5. Step 5: Solve for x
    x = 540,069,758,777,095.88/28,018,016.40
  6. Step 6: Final answer
    x = 19,275,802.79

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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.