Home / 28,955.30-39,962.49-16,688.32

Finding the Fourth Proportional to 28,955.30, 39,962.49 and 16,688.32

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Solution

The fourth proportional to 28,955.30, 39,962.49 and 16,688.32 is: 23,032.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,955.30 : 39,962.49 = 16,688.32 : x
  2. Step 2: Convert to fraction form
    28,955.30/39,962.49 = 16,688.32/x
  3. Step 3: Cross multiply
    28,955.30x = 39,962.49 × 16,688.32
  4. Step 4: Simplify right side
    28,955.30x = 666,906,721.21
  5. Step 5: Solve for x
    x = 666,906,721.21/28,955.30
  6. Step 6: Final answer
    x = 23,032.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.