Home / 30,875.18-42,607.70-16,728.08

Finding the Fourth Proportional to 30,875.18, 42,607.70 and 16,728.08

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Solution

The fourth proportional to 30,875.18, 42,607.70 and 16,728.08 is: 23,084.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,875.18 : 42,607.70 = 16,728.08 : x
  2. Step 2: Convert to fraction form
    30,875.18/42,607.70 = 16,728.08/x
  3. Step 3: Cross multiply
    30,875.18x = 42,607.70 × 16,728.08
  4. Step 4: Simplify right side
    30,875.18x = 712,745,014.22
  5. Step 5: Solve for x
    x = 712,745,014.22/30,875.18
  6. Step 6: Final answer
    x = 23,084.72

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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.