Home / 15,316.50-21,128.58-10,272.06

Finding the Fourth Proportional to 15,316.50, 21,128.58 and 10,272.06

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Solution

The fourth proportional to 15,316.50, 21,128.58 and 10,272.06 is: 14,169.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.50 : 21,128.58 = 10,272.06 : x
  2. Step 2: Convert to fraction form
    15,316.50/21,128.58 = 10,272.06/x
  3. Step 3: Cross multiply
    15,316.50x = 21,128.58 × 10,272.06
  4. Step 4: Simplify right side
    15,316.50x = 217,034,041.47
  5. Step 5: Solve for x
    x = 217,034,041.47/15,316.50
  6. Step 6: Final answer
    x = 14,169.95

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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.