Home / 20,798.02-28,707.16-12,303.10

Finding the Fourth Proportional to 20,798.02, 28,707.16 and 12,303.10

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Solution

The fourth proportional to 20,798.02, 28,707.16 and 12,303.10 is: 16,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.02 : 28,707.16 = 12,303.10 : x
  2. Step 2: Convert to fraction form
    20,798.02/28,707.16 = 12,303.10/x
  3. Step 3: Cross multiply
    20,798.02x = 28,707.16 × 12,303.10
  4. Step 4: Simplify right side
    20,798.02x = 353,186,977.37
  5. Step 5: Solve for x
    x = 353,186,977.37/20,798.02
  6. Step 6: Final answer
    x = 16,981.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.