Home / 21,959.20-32,938.80-19,962.40

Finding the Fourth Proportional to 21,959.20, 32,938.80 and 19,962.40

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Solution

The fourth proportional to 21,959.20, 32,938.80 and 19,962.40 is: 29,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.20 : 32,938.80 = 19,962.40 : x
  2. Step 2: Convert to fraction form
    21,959.20/32,938.80 = 19,962.40/x
  3. Step 3: Cross multiply
    21,959.20x = 32,938.80 × 19,962.40
  4. Step 4: Simplify right side
    21,959.20x = 657,537,501.12
  5. Step 5: Solve for x
    x = 657,537,501.12/21,959.20
  6. Step 6: Final answer
    x = 29,943.60

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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.