Home / 21,417.71-29,554.65-12,803.69

Finding the Fourth Proportional to 21,417.71, 29,554.65 and 12,803.69

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Solution

The fourth proportional to 21,417.71, 29,554.65 and 12,803.69 is: 17,668.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.71 : 29,554.65 = 12,803.69 : x
  2. Step 2: Convert to fraction form
    21,417.71/29,554.65 = 12,803.69/x
  3. Step 3: Cross multiply
    21,417.71x = 29,554.65 × 12,803.69
  4. Step 4: Simplify right side
    21,417.71x = 378,408,428.89
  5. Step 5: Solve for x
    x = 378,408,428.89/21,417.71
  6. Step 6: Final answer
    x = 17,668.02

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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.