Home / 19,980.16-29,959.36-6,127.36

Finding the Fourth Proportional to 19,980.16, 29,959.36 and 6,127.36

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Solution

The fourth proportional to 19,980.16, 29,959.36 and 6,127.36 is: 9,187.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.16 : 29,959.36 = 6,127.36 : x
  2. Step 2: Convert to fraction form
    19,980.16/29,959.36 = 6,127.36/x
  3. Step 3: Cross multiply
    19,980.16x = 29,959.36 × 6,127.36
  4. Step 4: Simplify right side
    19,980.16x = 183,571,784.09
  5. Step 5: Solve for x
    x = 183,571,784.09/19,980.16
  6. Step 6: Final answer
    x = 9,187.70

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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.