Home / 12,478,641.60-18,717,962.40-11,848,785.60

Finding the Fourth Proportional to 12,478,641.60, 18,717,962.40 and 11,848,785.60

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Solution

The fourth proportional to 12,478,641.60, 18,717,962.40 and 11,848,785.60 is: 17,773,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,641.60 : 18,717,962.40 = 11,848,785.60 : x
  2. Step 2: Convert to fraction form
    12,478,641.60/18,717,962.40 = 11,848,785.60/x
  3. Step 3: Cross multiply
    12,478,641.60x = 18,717,962.40 × 11,848,785.60
  4. Step 4: Simplify right side
    12,478,641.60x = 221,785,123,346,461.41
  5. Step 5: Solve for x
    x = 221,785,123,346,461.41/12,478,641.60
  6. Step 6: Final answer
    x = 17,773,178.40

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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.