Home / 21,330.27-32,017.95-11,978.28

Finding the Fourth Proportional to 21,330.27, 32,017.95 and 11,978.28

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Solution

The fourth proportional to 21,330.27, 32,017.95 and 11,978.28 is: 17,980.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.27 : 32,017.95 = 11,978.28 : x
  2. Step 2: Convert to fraction form
    21,330.27/32,017.95 = 11,978.28/x
  3. Step 3: Cross multiply
    21,330.27x = 32,017.95 × 11,978.28
  4. Step 4: Simplify right side
    21,330.27x = 383,519,970.13
  5. Step 5: Solve for x
    x = 383,519,970.13/21,330.27
  6. Step 6: Final answer
    x = 17,980.08

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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.