Home / 38,424.81-53,026.20-21,430.56

Finding the Fourth Proportional to 38,424.81, 53,026.20 and 21,430.56

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Solution

The fourth proportional to 38,424.81, 53,026.20 and 21,430.56 is: 29,574.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,424.81 : 53,026.20 = 21,430.56 : x
  2. Step 2: Convert to fraction form
    38,424.81/53,026.20 = 21,430.56/x
  3. Step 3: Cross multiply
    38,424.81x = 53,026.20 × 21,430.56
  4. Step 4: Simplify right side
    38,424.81x = 1,136,381,160.67
  5. Step 5: Solve for x
    x = 1,136,381,160.67/38,424.81
  6. Step 6: Final answer
    x = 29,574.15

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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.