Home / 21,700.47-29,946.25-12,269.04

Finding the Fourth Proportional to 21,700.47, 29,946.25 and 12,269.04

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Solution

The fourth proportional to 21,700.47, 29,946.25 and 12,269.04 is: 16,931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,700.47 : 29,946.25 = 12,269.04 : x
  2. Step 2: Convert to fraction form
    21,700.47/29,946.25 = 12,269.04/x
  3. Step 3: Cross multiply
    21,700.47x = 29,946.25 × 12,269.04
  4. Step 4: Simplify right side
    21,700.47x = 367,411,739.10
  5. Step 5: Solve for x
    x = 367,411,739.10/21,700.47
  6. Step 6: Final answer
    x = 16,931.05

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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.