Home / 21,210.04-29,284.50-13,255.84

Finding the Fourth Proportional to 21,210.04, 29,284.50 and 13,255.84

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Solution

The fourth proportional to 21,210.04, 29,284.50 and 13,255.84 is: 18,302.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.04 : 29,284.50 = 13,255.84 : x
  2. Step 2: Convert to fraction form
    21,210.04/29,284.50 = 13,255.84/x
  3. Step 3: Cross multiply
    21,210.04x = 29,284.50 × 13,255.84
  4. Step 4: Simplify right side
    21,210.04x = 388,190,646.48
  5. Step 5: Solve for x
    x = 388,190,646.48/21,210.04
  6. Step 6: Final answer
    x = 18,302.21

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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.