Home / 18,748.10-28,113.86-9,980.94

Finding the Fourth Proportional to 18,748.10, 28,113.86 and 9,980.94

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Solution

The fourth proportional to 18,748.10, 28,113.86 and 9,980.94 is: 14,967.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,748.10 : 28,113.86 = 9,980.94 : x
  2. Step 2: Convert to fraction form
    18,748.10/28,113.86 = 9,980.94/x
  3. Step 3: Cross multiply
    18,748.10x = 28,113.86 × 9,980.94
  4. Step 4: Simplify right side
    18,748.10x = 280,602,749.83
  5. Step 5: Solve for x
    x = 280,602,749.83/18,748.10
  6. Step 6: Final answer
    x = 14,967.00

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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.