Home / 30,661.40-42,312.18-17,050.28

Finding the Fourth Proportional to 30,661.40, 42,312.18 and 17,050.28

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Solution

The fourth proportional to 30,661.40, 42,312.18 and 17,050.28 is: 23,529.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.40 : 42,312.18 = 17,050.28 : x
  2. Step 2: Convert to fraction form
    30,661.40/42,312.18 = 17,050.28/x
  3. Step 3: Cross multiply
    30,661.40x = 42,312.18 × 17,050.28
  4. Step 4: Simplify right side
    30,661.40x = 721,434,516.41
  5. Step 5: Solve for x
    x = 721,434,516.41/30,661.40
  6. Step 6: Final answer
    x = 23,529.08

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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.