Home / 13,125,942.40-19,688,913.60-8,590,979.20

Finding the Fourth Proportional to 13,125,942.40, 19,688,913.60 and 8,590,979.20

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Solution

The fourth proportional to 13,125,942.40, 19,688,913.60 and 8,590,979.20 is: 12,886,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125,942.40 : 19,688,913.60 = 8,590,979.20 : x
  2. Step 2: Convert to fraction form
    13,125,942.40/19,688,913.60 = 8,590,979.20/x
  3. Step 3: Cross multiply
    13,125,942.40x = 19,688,913.60 × 8,590,979.20
  4. Step 4: Simplify right side
    13,125,942.40x = 169,147,047,208,197.12
  5. Step 5: Solve for x
    x = 169,147,047,208,197.12/13,125,942.40
  6. Step 6: Final answer
    x = 12,886,468.80

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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.