Home / 30,976.02-42,746.40-16,828.56

Finding the Fourth Proportional to 30,976.02, 42,746.40 and 16,828.56

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Solution

The fourth proportional to 30,976.02, 42,746.40 and 16,828.56 is: 23,223.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,976.02 : 42,746.40 = 16,828.56 : x
  2. Step 2: Convert to fraction form
    30,976.02/42,746.40 = 16,828.56/x
  3. Step 3: Cross multiply
    30,976.02x = 42,746.40 × 16,828.56
  4. Step 4: Simplify right side
    30,976.02x = 719,360,357.18
  5. Step 5: Solve for x
    x = 719,360,357.18/30,976.02
  6. Step 6: Final answer
    x = 23,223.14

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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.