Home / 38,430,910.40-53,034,621.36-21,027,328.16

Finding the Fourth Proportional to 38,430,910.40, 53,034,621.36 and 21,027,328.16

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Solution

The fourth proportional to 38,430,910.40, 53,034,621.36 and 21,027,328.16 is: 29,017,693.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,430,910.40 : 53,034,621.36 = 21,027,328.16 : x
  2. Step 2: Convert to fraction form
    38,430,910.40/53,034,621.36 = 21,027,328.16/x
  3. Step 3: Cross multiply
    38,430,910.40x = 53,034,621.36 × 21,027,328.16
  4. Step 4: Simplify right side
    38,430,910.40x = 1,115,176,387,178,065.50
  5. Step 5: Solve for x
    x = 1,115,176,387,178,065.50/38,430,910.40
  6. Step 6: Final answer
    x = 29,017,693.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.