Home / 31,056.32-42,858.60-16,909.40

Finding the Fourth Proportional to 31,056.32, 42,858.60 and 16,909.40

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Solution

The fourth proportional to 31,056.32, 42,858.60 and 16,909.40 is: 23,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,056.32 : 42,858.60 = 16,909.40 : x
  2. Step 2: Convert to fraction form
    31,056.32/42,858.60 = 16,909.40/x
  3. Step 3: Cross multiply
    31,056.32x = 42,858.60 × 16,909.40
  4. Step 4: Simplify right side
    31,056.32x = 724,713,210.84
  5. Step 5: Solve for x
    x = 724,713,210.84/31,056.32
  6. Step 6: Final answer
    x = 23,335.45

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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.