Home / 21,316.84-29,417.28-12,369.64

Finding the Fourth Proportional to 21,316.84, 29,417.28 and 12,369.64

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Solution

The fourth proportional to 21,316.84, 29,417.28 and 12,369.64 is: 17,070.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.84 : 29,417.28 = 12,369.64 : x
  2. Step 2: Convert to fraction form
    21,316.84/29,417.28 = 12,369.64/x
  3. Step 3: Cross multiply
    21,316.84x = 29,417.28 × 12,369.64
  4. Step 4: Simplify right side
    21,316.84x = 363,881,163.38
  5. Step 5: Solve for x
    x = 363,881,163.38/21,316.84
  6. Step 6: Final answer
    x = 17,070.13

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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.