Home / 21,390,561.60-29,522,748.24-12,693,529.62

Finding the Fourth Proportional to 21,390,561.60, 29,522,748.24 and 12,693,529.62

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Solution

The fourth proportional to 21,390,561.60, 29,522,748.24 and 12,693,529.62 is: 17,519,309.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390,561.60 : 29,522,748.24 = 12,693,529.62 : x
  2. Step 2: Convert to fraction form
    21,390,561.60/29,522,748.24 = 12,693,529.62/x
  3. Step 3: Cross multiply
    21,390,561.60x = 29,522,748.24 × 12,693,529.62
  4. Step 4: Simplify right side
    21,390,561.60x = 374,747,879,248,242.81
  5. Step 5: Solve for x
    x = 374,747,879,248,242.81/21,390,561.60
  6. Step 6: Final answer
    x = 17,519,309.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.