Home / 21,390.95-32,070.02-13,074.90

Finding the Fourth Proportional to 21,390.95, 32,070.02 and 13,074.90

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Solution

The fourth proportional to 21,390.95, 32,070.02 and 13,074.90 is: 19,602.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390.95 : 32,070.02 = 13,074.90 : x
  2. Step 2: Convert to fraction form
    21,390.95/32,070.02 = 13,074.90/x
  3. Step 3: Cross multiply
    21,390.95x = 32,070.02 × 13,074.90
  4. Step 4: Simplify right side
    21,390.95x = 419,312,239.12
  5. Step 5: Solve for x
    x = 419,312,239.12/21,390.95
  6. Step 6: Final answer
    x = 19,602.32

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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.