Home / 38,423.90-53,024.87-21,428.16

Finding the Fourth Proportional to 38,423.90, 53,024.87 and 21,428.16

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Solution

The fourth proportional to 38,423.90, 53,024.87 and 21,428.16 is: 29,570.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,423.90 : 53,024.87 = 21,428.16 : x
  2. Step 2: Convert to fraction form
    38,423.90/53,024.87 = 21,428.16/x
  3. Step 3: Cross multiply
    38,423.90x = 53,024.87 × 21,428.16
  4. Step 4: Simplify right side
    38,423.90x = 1,136,225,352.49
  5. Step 5: Solve for x
    x = 1,136,225,352.49/38,423.90
  6. Step 6: Final answer
    x = 29,570.80

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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.