Home / 21,384.61-29,508.50-12,430.26

Finding the Fourth Proportional to 21,384.61, 29,508.50 and 12,430.26

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Solution

The fourth proportional to 21,384.61, 29,508.50 and 12,430.26 is: 17,152.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.61 : 29,508.50 = 12,430.26 : x
  2. Step 2: Convert to fraction form
    21,384.61/29,508.50 = 12,430.26/x
  3. Step 3: Cross multiply
    21,384.61x = 29,508.50 × 12,430.26
  4. Step 4: Simplify right side
    21,384.61x = 366,798,358.29
  5. Step 5: Solve for x
    x = 366,798,358.29/21,384.61
  6. Step 6: Final answer
    x = 17,152.45

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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.