Home / 13,690,128.64-18,892,600.32-7,495,070.80

Finding the Fourth Proportional to 13,690,128.64, 18,892,600.32 and 7,495,070.80

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Solution

The fourth proportional to 13,690,128.64, 18,892,600.32 and 7,495,070.80 is: 10,343,319.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690,128.64 : 18,892,600.32 = 7,495,070.80 : x
  2. Step 2: Convert to fraction form
    13,690,128.64/18,892,600.32 = 7,495,070.80/x
  3. Step 3: Cross multiply
    13,690,128.64x = 18,892,600.32 × 7,495,070.80
  4. Step 4: Simplify right side
    13,690,128.64x = 141,601,376,994,502.66
  5. Step 5: Solve for x
    x = 141,601,376,994,502.66/13,690,128.64
  6. Step 6: Final answer
    x = 10,343,319.68

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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.