Home / 12,938,019.60-19,407,029.40-8,906,941.20

Finding the Fourth Proportional to 12,938,019.60, 19,407,029.40 and 8,906,941.20

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Solution

The fourth proportional to 12,938,019.60, 19,407,029.40 and 8,906,941.20 is: 13,360,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938,019.60 : 19,407,029.40 = 8,906,941.20 : x
  2. Step 2: Convert to fraction form
    12,938,019.60/19,407,029.40 = 8,906,941.20/x
  3. Step 3: Cross multiply
    12,938,019.60x = 19,407,029.40 × 8,906,941.20
  4. Step 4: Simplify right side
    12,938,019.60x = 172,857,269,732,471.25
  5. Step 5: Solve for x
    x = 172,857,269,732,471.25/12,938,019.60
  6. Step 6: Final answer
    x = 13,360,411.80

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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.