Home / 10,085.63-15,128.51-3,160.13

Finding the Fourth Proportional to 10,085.63, 15,128.51 and 3,160.13

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Solution

The fourth proportional to 10,085.63, 15,128.51 and 3,160.13 is: 4,740.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.63 : 15,128.51 = 3,160.13 : x
  2. Step 2: Convert to fraction form
    10,085.63/15,128.51 = 3,160.13/x
  3. Step 3: Cross multiply
    10,085.63x = 15,128.51 × 3,160.13
  4. Step 4: Simplify right side
    10,085.63x = 47,807,966.86
  5. Step 5: Solve for x
    x = 47,807,966.86/10,085.63
  6. Step 6: Final answer
    x = 4,740.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.