Home / 19,430.81-29,118.40-8,334.53

Finding the Fourth Proportional to 19,430.81, 29,118.40 and 8,334.53

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Solution

The fourth proportional to 19,430.81, 29,118.40 and 8,334.53 is: 12,489.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,430.81 : 29,118.40 = 8,334.53 : x
  2. Step 2: Convert to fraction form
    19,430.81/29,118.40 = 8,334.53/x
  3. Step 3: Cross multiply
    19,430.81x = 29,118.40 × 8,334.53
  4. Step 4: Simplify right side
    19,430.81x = 242,688,050.94
  5. Step 5: Solve for x
    x = 242,688,050.94/19,430.81
  6. Step 6: Final answer
    x = 12,489.86

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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.