Home / 21,981.64-32,899.02-13,068.04

Finding the Fourth Proportional to 21,981.64, 32,899.02 and 13,068.04

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Solution

The fourth proportional to 21,981.64, 32,899.02 and 13,068.04 is: 19,558.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.64 : 32,899.02 = 13,068.04 : x
  2. Step 2: Convert to fraction form
    21,981.64/32,899.02 = 13,068.04/x
  3. Step 3: Cross multiply
    21,981.64x = 32,899.02 × 13,068.04
  4. Step 4: Simplify right side
    21,981.64x = 429,925,709.32
  5. Step 5: Solve for x
    x = 429,925,709.32/21,981.64
  6. Step 6: Final answer
    x = 19,558.40

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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.