Home / 18,488,056.40-25,519,930.48-12,705,978.32

Finding the Fourth Proportional to 18,488,056.40, 25,519,930.48 and 12,705,978.32

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Solution

The fourth proportional to 18,488,056.40, 25,519,930.48 and 12,705,978.32 is: 17,538,657.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488,056.40 : 25,519,930.48 = 12,705,978.32 : x
  2. Step 2: Convert to fraction form
    18,488,056.40/25,519,930.48 = 12,705,978.32/x
  3. Step 3: Cross multiply
    18,488,056.40x = 25,519,930.48 × 12,705,978.32
  4. Step 4: Simplify right side
    18,488,056.40x = 324,255,683,406,787.19
  5. Step 5: Solve for x
    x = 324,255,683,406,787.19/18,488,056.40
  6. Step 6: Final answer
    x = 17,538,657.20

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1.5x scale

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.