Home / 21,064.08-29,068.36-12,681.04

Finding the Fourth Proportional to 21,064.08, 29,068.36 and 12,681.04

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Solution

The fourth proportional to 21,064.08, 29,068.36 and 12,681.04 is: 17,499.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,064.08 : 29,068.36 = 12,681.04 : x
  2. Step 2: Convert to fraction form
    21,064.08/29,068.36 = 12,681.04/x
  3. Step 3: Cross multiply
    21,064.08x = 29,068.36 × 12,681.04
  4. Step 4: Simplify right side
    21,064.08x = 368,617,035.89
  5. Step 5: Solve for x
    x = 368,617,035.89/21,064.08
  6. Step 6: Final answer
    x = 17,499.79

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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.