Home / 30,548,612.64-42,158,598.72-18,949,913.28

Finding the Fourth Proportional to 30,548,612.64, 42,158,598.72 and 18,949,913.28

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Solution

The fourth proportional to 30,548,612.64, 42,158,598.72 and 18,949,913.28 is: 26,151,819.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,548,612.64 : 42,158,598.72 = 18,949,913.28 : x
  2. Step 2: Convert to fraction form
    30,548,612.64/42,158,598.72 = 18,949,913.28/x
  3. Step 3: Cross multiply
    30,548,612.64x = 42,158,598.72 × 18,949,913.28
  4. Step 4: Simplify right side
    30,548,612.64x = 798,901,789,750,319
  5. Step 5: Solve for x
    x = 798,901,789,750,319/30,548,612.64
  6. Step 6: Final answer
    x = 26,151,819.04

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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.