Home / 10,133.81-13,985.28-5,657.55

Finding the Fourth Proportional to 10,133.81, 13,985.28 and 5,657.55

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Solution

The fourth proportional to 10,133.81, 13,985.28 and 5,657.55 is: 7,807.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,133.81 : 13,985.28 = 5,657.55 : x
  2. Step 2: Convert to fraction form
    10,133.81/13,985.28 = 5,657.55/x
  3. Step 3: Cross multiply
    10,133.81x = 13,985.28 × 5,657.55
  4. Step 4: Simplify right side
    10,133.81x = 79,122,392.58
  5. Step 5: Solve for x
    x = 79,122,392.58/10,133.81
  6. Step 6: Final answer
    x = 7,807.76

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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.