Home / 28,173.32-42,281.40-10,420.77

Finding the Fourth Proportional to 28,173.32, 42,281.40 and 10,420.77

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Solution

The fourth proportional to 28,173.32, 42,281.40 and 10,420.77 is: 15,639.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.32 : 42,281.40 = 10,420.77 : x
  2. Step 2: Convert to fraction form
    28,173.32/42,281.40 = 10,420.77/x
  3. Step 3: Cross multiply
    28,173.32x = 42,281.40 × 10,420.77
  4. Step 4: Simplify right side
    28,173.32x = 440,604,744.68
  5. Step 5: Solve for x
    x = 440,604,744.68/28,173.32
  6. Step 6: Final answer
    x = 15,639.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.