Home / 31,390.47-47,085.95-11,669.00

Finding the Fourth Proportional to 31,390.47, 47,085.95 and 11,669.00

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Solution

The fourth proportional to 31,390.47, 47,085.95 and 11,669.00 is: 17,503.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.47 : 47,085.95 = 11,669.00 : x
  2. Step 2: Convert to fraction form
    31,390.47/47,085.95 = 11,669.00/x
  3. Step 3: Cross multiply
    31,390.47x = 47,085.95 × 11,669.00
  4. Step 4: Simplify right side
    31,390.47x = 549,445,744.29
  5. Step 5: Solve for x
    x = 549,445,744.29/31,390.47
  6. Step 6: Final answer
    x = 17,503.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.