Home / 15,077.77-20,807.35-9,108.34

Finding the Fourth Proportional to 15,077.77, 20,807.35 and 9,108.34

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Solution

The fourth proportional to 15,077.77, 20,807.35 and 9,108.34 is: 12,569.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,077.77 : 20,807.35 = 9,108.34 : x
  2. Step 2: Convert to fraction form
    15,077.77/20,807.35 = 9,108.34/x
  3. Step 3: Cross multiply
    15,077.77x = 20,807.35 × 9,108.34
  4. Step 4: Simplify right side
    15,077.77x = 189,520,343.51
  5. Step 5: Solve for x
    x = 189,520,343.51/15,077.77
  6. Step 6: Final answer
    x = 12,569.52

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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.