Home / 28,354,509.20-42,531,763.80-13,209,971.60

Finding the Fourth Proportional to 28,354,509.20, 42,531,763.80 and 13,209,971.60

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Solution

The fourth proportional to 28,354,509.20, 42,531,763.80 and 13,209,971.60 is: 19,814,957.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354,509.20 : 42,531,763.80 = 13,209,971.60 : x
  2. Step 2: Convert to fraction form
    28,354,509.20/42,531,763.80 = 13,209,971.60/x
  3. Step 3: Cross multiply
    28,354,509.20x = 42,531,763.80 × 13,209,971.60
  4. Step 4: Simplify right side
    28,354,509.20x = 561,843,391,895,908
  5. Step 5: Solve for x
    x = 561,843,391,895,908/28,354,509.20
  6. Step 6: Final answer
    x = 19,814,957.40

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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.