Home / 38,547.36-53,191.08-21,780.36

Finding the Fourth Proportional to 38,547.36, 53,191.08 and 21,780.36

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Solution

The fourth proportional to 38,547.36, 53,191.08 and 21,780.36 is: 30,054.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,547.36 : 53,191.08 = 21,780.36 : x
  2. Step 2: Convert to fraction form
    38,547.36/53,191.08 = 21,780.36/x
  3. Step 3: Cross multiply
    38,547.36x = 53,191.08 × 21,780.36
  4. Step 4: Simplify right side
    38,547.36x = 1,158,520,871.19
  5. Step 5: Solve for x
    x = 1,158,520,871.19/38,547.36
  6. Step 6: Final answer
    x = 30,054.48

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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.