Home / 28,456.64-42,689.54-10,688.63

Finding the Fourth Proportional to 28,456.64, 42,689.54 and 10,688.63

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Solution

The fourth proportional to 28,456.64, 42,689.54 and 10,688.63 is: 16,034.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.64 : 42,689.54 = 10,688.63 : x
  2. Step 2: Convert to fraction form
    28,456.64/42,689.54 = 10,688.63/x
  3. Step 3: Cross multiply
    28,456.64x = 42,689.54 × 10,688.63
  4. Step 4: Simplify right side
    28,456.64x = 456,292,697.93
  5. Step 5: Solve for x
    x = 456,292,697.93/28,456.64
  6. Step 6: Final answer
    x = 16,034.67

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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.