Home / 15,271.80-21,075.30-9,303.72

Finding the Fourth Proportional to 15,271.80, 21,075.30 and 9,303.72

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Solution

The fourth proportional to 15,271.80, 21,075.30 and 9,303.72 is: 12,839.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.80 : 21,075.30 = 9,303.72 : x
  2. Step 2: Convert to fraction form
    15,271.80/21,075.30 = 9,303.72/x
  3. Step 3: Cross multiply
    15,271.80x = 21,075.30 × 9,303.72
  4. Step 4: Simplify right side
    15,271.80x = 196,078,690.12
  5. Step 5: Solve for x
    x = 196,078,690.12/15,271.80
  6. Step 6: Final answer
    x = 12,839.27

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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.