Home / 21,700.75-29,948.88-12,271.14

Finding the Fourth Proportional to 21,700.75, 29,948.88 and 12,271.14

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Solution

The fourth proportional to 21,700.75, 29,948.88 and 12,271.14 is: 16,935.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,700.75 : 29,948.88 = 12,271.14 : x
  2. Step 2: Convert to fraction form
    21,700.75/29,948.88 = 12,271.14/x
  3. Step 3: Cross multiply
    21,700.75x = 29,948.88 × 12,271.14
  4. Step 4: Simplify right side
    21,700.75x = 367,506,899.32
  5. Step 5: Solve for x
    x = 367,506,899.32/21,700.75
  6. Step 6: Final answer
    x = 16,935.22

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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.