Home / 39,316.28-54,256.47-21,411.28

Finding the Fourth Proportional to 39,316.28, 54,256.47 and 21,411.28

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Solution

The fourth proportional to 39,316.28, 54,256.47 and 21,411.28 is: 29,547.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,316.28 : 54,256.47 = 21,411.28 : x
  2. Step 2: Convert to fraction form
    39,316.28/54,256.47 = 21,411.28/x
  3. Step 3: Cross multiply
    39,316.28x = 54,256.47 × 21,411.28
  4. Step 4: Simplify right side
    39,316.28x = 1,161,700,470.98
  5. Step 5: Solve for x
    x = 1,161,700,470.98/39,316.28
  6. Step 6: Final answer
    x = 29,547.57

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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.