Home / 12,468,638.60-18,702,957.90-8,213,611.40

Finding the Fourth Proportional to 12,468,638.60, 18,702,957.90 and 8,213,611.40

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Solution

The fourth proportional to 12,468,638.60, 18,702,957.90 and 8,213,611.40 is: 12,320,417.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,468,638.60 : 18,702,957.90 = 8,213,611.40 : x
  2. Step 2: Convert to fraction form
    12,468,638.60/18,702,957.90 = 8,213,611.40/x
  3. Step 3: Cross multiply
    12,468,638.60x = 18,702,957.90 × 8,213,611.40
  4. Step 4: Simplify right side
    12,468,638.60x = 153,618,828,221,160.06
  5. Step 5: Solve for x
    x = 153,618,828,221,160.06/12,468,638.60
  6. Step 6: Final answer
    x = 12,320,417.10

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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.