Home / 21,938.90-32,812.35-19,615.70

Finding the Fourth Proportional to 21,938.90, 32,812.35 and 19,615.70

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Solution

The fourth proportional to 21,938.90, 32,812.35 and 19,615.70 is: 29,337.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.90 : 32,812.35 = 19,615.70 : x
  2. Step 2: Convert to fraction form
    21,938.90/32,812.35 = 19,615.70/x
  3. Step 3: Cross multiply
    21,938.90x = 32,812.35 × 19,615.70
  4. Step 4: Simplify right side
    21,938.90x = 643,637,213.90
  5. Step 5: Solve for x
    x = 643,637,213.90/21,938.90
  6. Step 6: Final answer
    x = 29,337.72

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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.