Home / 39,316.84-54,255.60-21,411.80

Finding the Fourth Proportional to 39,316.84, 54,255.60 and 21,411.80

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Solution

The fourth proportional to 39,316.84, 54,255.60 and 21,411.80 is: 29,547.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,316.84 : 54,255.60 = 21,411.80 : x
  2. Step 2: Convert to fraction form
    39,316.84/54,255.60 = 21,411.80/x
  3. Step 3: Cross multiply
    39,316.84x = 54,255.60 × 21,411.80
  4. Step 4: Simplify right side
    39,316.84x = 1,161,710,056.08
  5. Step 5: Solve for x
    x = 1,161,710,056.08/39,316.84
  6. Step 6: Final answer
    x = 29,547.39

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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.