Home / 21,075.12-31,612.32-6,284.08

Finding the Fourth Proportional to 21,075.12, 31,612.32 and 6,284.08

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Solution

The fourth proportional to 21,075.12, 31,612.32 and 6,284.08 is: 9,426.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.12 : 31,612.32 = 6,284.08 : x
  2. Step 2: Convert to fraction form
    21,075.12/31,612.32 = 6,284.08/x
  3. Step 3: Cross multiply
    21,075.12x = 31,612.32 × 6,284.08
  4. Step 4: Simplify right side
    21,075.12x = 198,654,347.87
  5. Step 5: Solve for x
    x = 198,654,347.87/21,075.12
  6. Step 6: Final answer
    x = 9,426.01

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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.