Home / 45,931.84-68,898.12-12,653.72

Finding the Fourth Proportional to 45,931.84, 68,898.12 and 12,653.72

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Solution

The fourth proportional to 45,931.84, 68,898.12 and 12,653.72 is: 18,980.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,931.84 : 68,898.12 = 12,653.72 : x
  2. Step 2: Convert to fraction form
    45,931.84/68,898.12 = 12,653.72/x
  3. Step 3: Cross multiply
    45,931.84x = 68,898.12 × 12,653.72
  4. Step 4: Simplify right side
    45,931.84x = 871,817,519.01
  5. Step 5: Solve for x
    x = 871,817,519.01/45,931.84
  6. Step 6: Final answer
    x = 18,980.68

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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.