Home / 28,018,000.40-42,013,003.80-12,854,800.40

Finding the Fourth Proportional to 28,018,000.40, 42,013,003.80 and 12,854,800.40

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Solution

The fourth proportional to 28,018,000.40, 42,013,003.80 and 12,854,800.40 is: 19,275,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018,000.40 : 42,013,003.80 = 12,854,800.40 : x
  2. Step 2: Convert to fraction form
    28,018,000.40/42,013,003.80 = 12,854,800.40/x
  3. Step 3: Cross multiply
    28,018,000.40x = 42,013,003.80 × 12,854,800.40
  4. Step 4: Simplify right side
    28,018,000.40x = 540,068,778,053,441.50
  5. Step 5: Solve for x
    x = 540,068,778,053,441.50/28,018,000.40
  6. Step 6: Final answer
    x = 19,275,778.80

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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.