Home / 21,345.60-29,451.02-13,792.26

Finding the Fourth Proportional to 21,345.60, 29,451.02 and 13,792.26

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Solution

The fourth proportional to 21,345.60, 29,451.02 and 13,792.26 is: 19,029.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.60 : 29,451.02 = 13,792.26 : x
  2. Step 2: Convert to fraction form
    21,345.60/29,451.02 = 13,792.26/x
  3. Step 3: Cross multiply
    21,345.60x = 29,451.02 × 13,792.26
  4. Step 4: Simplify right side
    21,345.60x = 406,196,125.11
  5. Step 5: Solve for x
    x = 406,196,125.11/21,345.60
  6. Step 6: Final answer
    x = 19,029.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.