Home / 15,554.40-21,448.09-10,509.85

Finding the Fourth Proportional to 15,554.40, 21,448.09 and 10,509.85

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Solution

The fourth proportional to 15,554.40, 21,448.09 and 10,509.85 is: 14,492.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554.40 : 21,448.09 = 10,509.85 : x
  2. Step 2: Convert to fraction form
    15,554.40/21,448.09 = 10,509.85/x
  3. Step 3: Cross multiply
    15,554.40x = 21,448.09 × 10,509.85
  4. Step 4: Simplify right side
    15,554.40x = 225,416,248.63
  5. Step 5: Solve for x
    x = 225,416,248.63/15,554.40
  6. Step 6: Final answer
    x = 14,492.12

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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.