Home / 31,800.16-47,700.24-12,074.05

Finding the Fourth Proportional to 31,800.16, 47,700.24 and 12,074.05

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Solution

The fourth proportional to 31,800.16, 47,700.24 and 12,074.05 is: 18,111.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,800.16 : 47,700.24 = 12,074.05 : x
  2. Step 2: Convert to fraction form
    31,800.16/47,700.24 = 12,074.05/x
  3. Step 3: Cross multiply
    31,800.16x = 47,700.24 × 12,074.05
  4. Step 4: Simplify right side
    31,800.16x = 575,935,082.77
  5. Step 5: Solve for x
    x = 575,935,082.77/31,800.16
  6. Step 6: Final answer
    x = 18,111.08

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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.