Home / 21,348.32-29,454-13,798.80

Finding the Fourth Proportional to 21,348.32, 29,454 and 13,798.80

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Solution

The fourth proportional to 21,348.32, 29,454 and 13,798.80 is: 19,038.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,348.32 : 29,454 = 13,798.80 : x
  2. Step 2: Convert to fraction form
    21,348.32/29,454 = 13,798.80/x
  3. Step 3: Cross multiply
    21,348.32x = 29,454 × 13,798.80
  4. Step 4: Simplify right side
    21,348.32x = 406,429,855.20
  5. Step 5: Solve for x
    x = 406,429,855.20/21,348.32
  6. Step 6: Final answer
    x = 19,038.03

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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.