Home / 10,085.13-15,127.74-3,159.63

Finding the Fourth Proportional to 10,085.13, 15,127.74 and 3,159.63

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Solution

The fourth proportional to 10,085.13, 15,127.74 and 3,159.63 is: 4,739.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.13 : 15,127.74 = 3,159.63 : x
  2. Step 2: Convert to fraction form
    10,085.13/15,127.74 = 3,159.63/x
  3. Step 3: Cross multiply
    10,085.13x = 15,127.74 × 3,159.63
  4. Step 4: Simplify right side
    10,085.13x = 47,798,094.80
  5. Step 5: Solve for x
    x = 47,798,094.80/10,085.13
  6. Step 6: Final answer
    x = 4,739.46

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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.