Home / 13,988.36-19,303.86-7,700.36

Finding the Fourth Proportional to 13,988.36, 19,303.86 and 7,700.36

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Solution

The fourth proportional to 13,988.36, 19,303.86 and 7,700.36 is: 10,626.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.36 : 19,303.86 = 7,700.36 : x
  2. Step 2: Convert to fraction form
    13,988.36/19,303.86 = 7,700.36/x
  3. Step 3: Cross multiply
    13,988.36x = 19,303.86 × 7,700.36
  4. Step 4: Simplify right side
    13,988.36x = 148,646,671.39
  5. Step 5: Solve for x
    x = 148,646,671.39/13,988.36
  6. Step 6: Final answer
    x = 10,626.45

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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.