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Finding the Fourth Proportional to 28,703.51, 39,624.30 and 19,159.52

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Solution

The fourth proportional to 28,703.51, 39,624.30 and 19,159.52 is: 26,449.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,703.51 : 39,624.30 = 19,159.52 : x
  2. Step 2: Convert to fraction form
    28,703.51/39,624.30 = 19,159.52/x
  3. Step 3: Cross multiply
    28,703.51x = 39,624.30 × 19,159.52
  4. Step 4: Simplify right side
    28,703.51x = 759,182,667.40
  5. Step 5: Solve for x
    x = 759,182,667.40/28,703.51
  6. Step 6: Final answer
    x = 26,449.12

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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.