Home / 21,039,638.40-31,559,457.60-19,464,998.40

Finding the Fourth Proportional to 21,039,638.40, 31,559,457.60 and 19,464,998.40

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Solution

The fourth proportional to 21,039,638.40, 31,559,457.60 and 19,464,998.40 is: 29,197,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039,638.40 : 31,559,457.60 = 19,464,998.40 : x
  2. Step 2: Convert to fraction form
    21,039,638.40/31,559,457.60 = 19,464,998.40/x
  3. Step 3: Cross multiply
    21,039,638.40x = 31,559,457.60 × 19,464,998.40
  4. Step 4: Simplify right side
    21,039,638.40x = 614,304,791,688,867.88
  5. Step 5: Solve for x
    x = 614,304,791,688,867.88/21,039,638.40
  6. Step 6: Final answer
    x = 29,197,497.60

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Similar ratio
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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.