Home / 31,070.16-46,615.08-19,989.36

Finding the Fourth Proportional to 31,070.16, 46,615.08 and 19,989.36

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Solution

The fourth proportional to 31,070.16, 46,615.08 and 19,989.36 is: 29,990.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,070.16 : 46,615.08 = 19,989.36 : x
  2. Step 2: Convert to fraction form
    31,070.16/46,615.08 = 19,989.36/x
  3. Step 3: Cross multiply
    31,070.16x = 46,615.08 × 19,989.36
  4. Step 4: Simplify right side
    31,070.16x = 931,805,615.55
  5. Step 5: Solve for x
    x = 931,805,615.55/31,070.16
  6. Step 6: Final answer
    x = 29,990.37

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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.