Home / 15,317.95-21,148.56-10,220.74

Finding the Fourth Proportional to 15,317.95, 21,148.56 and 10,220.74

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Solution

The fourth proportional to 15,317.95, 21,148.56 and 10,220.74 is: 14,111.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,317.95 : 21,148.56 = 10,220.74 : x
  2. Step 2: Convert to fraction form
    15,317.95/21,148.56 = 10,220.74/x
  3. Step 3: Cross multiply
    15,317.95x = 21,148.56 × 10,220.74
  4. Step 4: Simplify right side
    15,317.95x = 216,153,981.24
  5. Step 5: Solve for x
    x = 216,153,981.24/15,317.95
  6. Step 6: Final answer
    x = 14,111.16

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Double scale
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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.