Home / 28,521.86-42,742.23-13,512.98

Finding the Fourth Proportional to 28,521.86, 42,742.23 and 13,512.98

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Solution

The fourth proportional to 28,521.86, 42,742.23 and 13,512.98 is: 20,250.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.86 : 42,742.23 = 13,512.98 : x
  2. Step 2: Convert to fraction form
    28,521.86/42,742.23 = 13,512.98/x
  3. Step 3: Cross multiply
    28,521.86x = 42,742.23 × 13,512.98
  4. Step 4: Simplify right side
    28,521.86x = 577,574,899.15
  5. Step 5: Solve for x
    x = 577,574,899.15/28,521.86
  6. Step 6: Final answer
    x = 20,250.25

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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.