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Finding the Fourth Proportional to 26,646.80, 39,970.20 and 14,205.20

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Solution

The fourth proportional to 26,646.80, 39,970.20 and 14,205.20 is: 21,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,646.80 : 39,970.20 = 14,205.20 : x
  2. Step 2: Convert to fraction form
    26,646.80/39,970.20 = 14,205.20/x
  3. Step 3: Cross multiply
    26,646.80x = 39,970.20 × 14,205.20
  4. Step 4: Simplify right side
    26,646.80x = 567,784,685.04
  5. Step 5: Solve for x
    x = 567,784,685.04/26,646.80
  6. Step 6: Final answer
    x = 21,307.80

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1.5x scale

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.