Home / 28,108,204.80-42,130,814.40-11,931,403.20

Finding the Fourth Proportional to 28,108,204.80, 42,130,814.40 and 11,931,403.20

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Solution

The fourth proportional to 28,108,204.80, 42,130,814.40 and 11,931,403.20 is: 17,883,736.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108,204.80 : 42,130,814.40 = 11,931,403.20 : x
  2. Step 2: Convert to fraction form
    28,108,204.80/42,130,814.40 = 11,931,403.20/x
  3. Step 3: Cross multiply
    28,108,204.80x = 42,130,814.40 × 11,931,403.20
  4. Step 4: Simplify right side
    28,108,204.80x = 502,679,733,750,766
  5. Step 5: Solve for x
    x = 502,679,733,750,766/28,108,204.80
  6. Step 6: Final answer
    x = 17,883,736.70

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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.