Home / 28,210.86-42,319.11-10,446.28

Finding the Fourth Proportional to 28,210.86, 42,319.11 and 10,446.28

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Solution

The fourth proportional to 28,210.86, 42,319.11 and 10,446.28 is: 15,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.86 : 42,319.11 = 10,446.28 : x
  2. Step 2: Convert to fraction form
    28,210.86/42,319.11 = 10,446.28/x
  3. Step 3: Cross multiply
    28,210.86x = 42,319.11 × 10,446.28
  4. Step 4: Simplify right side
    28,210.86x = 442,077,060.82
  5. Step 5: Solve for x
    x = 442,077,060.82/28,210.86
  6. Step 6: Final answer
    x = 15,670.46

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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.