Home / 19,851.32-29,777.65-9,985.22

Finding the Fourth Proportional to 19,851.32, 29,777.65 and 9,985.22

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Solution

The fourth proportional to 19,851.32, 29,777.65 and 9,985.22 is: 14,978.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,851.32 : 29,777.65 = 9,985.22 : x
  2. Step 2: Convert to fraction form
    19,851.32/29,777.65 = 9,985.22/x
  3. Step 3: Cross multiply
    19,851.32x = 29,777.65 × 9,985.22
  4. Step 4: Simplify right side
    19,851.32x = 297,336,386.33
  5. Step 5: Solve for x
    x = 297,336,386.33/19,851.32
  6. Step 6: Final answer
    x = 14,978.17

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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.