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Finding the Fourth Proportional to 13,987.98, 19,303.35 and 7,700.35

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Solution

The fourth proportional to 13,987.98, 19,303.35 and 7,700.35 is: 10,626.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.98 : 19,303.35 = 7,700.35 : x
  2. Step 2: Convert to fraction form
    13,987.98/19,303.35 = 7,700.35/x
  3. Step 3: Cross multiply
    13,987.98x = 19,303.35 × 7,700.35
  4. Step 4: Simplify right side
    13,987.98x = 148,642,551.17
  5. Step 5: Solve for x
    x = 148,642,551.17/13,987.98
  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.