Home / 13,479,875.60-20,219,813.40-7,740,312.80

Finding the Fourth Proportional to 13,479,875.60, 20,219,813.40 and 7,740,312.80

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Solution

The fourth proportional to 13,479,875.60, 20,219,813.40 and 7,740,312.80 is: 11,610,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,875.60 : 20,219,813.40 = 7,740,312.80 : x
  2. Step 2: Convert to fraction form
    13,479,875.60/20,219,813.40 = 7,740,312.80/x
  3. Step 3: Cross multiply
    13,479,875.60x = 20,219,813.40 × 7,740,312.80
  4. Step 4: Simplify right side
    13,479,875.60x = 156,507,680,473,631.50
  5. Step 5: Solve for x
    x = 156,507,680,473,631.50/13,479,875.60
  6. Step 6: Final answer
    x = 11,610,469.20

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1.5x scale

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.