Home / 20,689.32-31,038.81-5,898.45

Finding the Fourth Proportional to 20,689.32, 31,038.81 and 5,898.45

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Solution

The fourth proportional to 20,689.32, 31,038.81 and 5,898.45 is: 8,849.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.32 : 31,038.81 = 5,898.45 : x
  2. Step 2: Convert to fraction form
    20,689.32/31,038.81 = 5,898.45/x
  3. Step 3: Cross multiply
    20,689.32x = 31,038.81 × 5,898.45
  4. Step 4: Simplify right side
    20,689.32x = 183,080,868.84
  5. Step 5: Solve for x
    x = 183,080,868.84/20,689.32
  6. Step 6: Final answer
    x = 8,849.05

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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.